?a1425 tr. Guy de Chauliac Grande Chirurgie (N.Y. Acad. Med.) f. 53^v (MED) Þai beþ semilunarez i. half rounde, dented or toþed.

1550 J. Harington tr. Cicero Bk. Freendeship f. 1^v He often talked of sundrie matters..sittyng at home in his half round [L. in hemicyclio sedentem] chayre.

1590 J. Blagrave Baculum Familliare iii. 9 An halfe round pin standing out to fit into the halfe round holes or sockets of those boltes.

1671 J. Milton Samson Agonistes 1606 A spacious Theatre Half round on two main Pillars. View more context for this quotation

1759 Pennsylvania Gaz. 11 Oct. He likewise makes..half round hat cases, fit for travelling, round periwig boxes, and canteens.

1839 R. S. Robinson Naut. Steam Engine Explained 40 A small piece of cast-iron, flat on one side and half-round on the other.

1940 Chambers's Techn. Dict. 122/2 Button-headed screws, screws having hemispherical heads, slotted for a screwdriver; known also as half-round screws.

2006 Build It May 35/2 Oak weather-boards, clay bonnet tiles and half round ridge tiles.

1635 J. Babington Pyrotechnia xxxvi. 43 Then having boared your holes at proportionable distance, cut so many hollow groofes with a googe or halfe round chisell.

1678 J. Moxon Mech. Exercises I. ii. 33 With the edge of an half round file.

1759 Goods Mrs Custis Had Oct. in M. Washington Worthy Partner (1994) 112 3 half round Rasps.

1884 F. J. Britten Watch & Clockmakers' Handbk. (new ed.) 95 For long holes of large diameter nothing beats a half-round drill.

1971 J. A. Dolan Motor Vehicle Technol. v. 51 If the point of the drill wanders from the centre of the intended hole it can be drawn..by cutting a groove from the countersink to the true hole centre with a centre punch or half round chisel.

2008 Lapidary Jrnl. Jewelry Artist Apr. 17/1 I recommend a set of #1 files called Habilis files for beginners, which includes a half round, flat, round, triangular, and square file.

1594 J. Smythe Certen Instr. Militarie 79 All the rest of the carriages should be reduced into 2. 3. or 4. ranks in the forme of a Rainebow, a semicircle or halfe round.

1635 J. Babington Pyrotechnia xl. 47 Provide a piece of planke of two inch thicke, and turne it to a halfe round.

1681 T. Langford Plain Instr. Fruit-trees viii. 60 Grapes ripen delicately on every side the cluster, that grew in a half round.

1769 J. Wallis Nat. Hist. Northumberland I. v. 64 A large, thick, brown slate with broad, transverse, parallel channels, the intermediate spaces tumid or swelling in half rounds.

1811 J. Parkins Young Man's Best Compan. 27 In the midst of the half-round [of the quill].

1937 Hesperia 6 28 The head band is crowned with a delicate half round.

2010 Woodcarving Jan. 35/2 My starting material was a big half-round of red alder.

1669 J. Brown Descr. & Use Ordinary Joynt-rule xx. 28 (table) The Echinus, or Half-round.

1813 Gentleman's Mag. Nov. 443/2 What with the combination of half rounds, both protruding and receding..the lines of the uprights are broken, uncouth, and, it may almost be pronounced, barbarous.

1909 W. M. Ramsay & G. L. Bell 1001 Churches ii. 79 The profile used both on lintel and jambs is composed of a cavetto and a half round forming together an S-shaped cyma with a notched band running round it.

2000 F. Wilbur Carving Archit. Detail in Wood ii. 42 The simplest rendition is the rope or cable molding, which is a half-round spiraling around a half-round.

1824 J. C. Cooke Cookery & Confectionary 138 Rub and salt a half round of beef with the same mixture as hams.

1872 Food Jrnl. Jan. 572 I got a half round of beef from the butcher's.

1954 J. Dingle Pinch of Pound Notes vi. 82 A thirty-pound half-round of beef might look done. But how could I be sure?

2006 M. Sky Beautiful Breads & Fabulous Fillings 92 In a 12 x 9-inch roasting pan, place the half round of beef.

1852 C. Tomlinson Cycl. Useful Arts (1854) I. 642/1 Cross files and double half-rounds.

1859 New Amer. Cycl. VIII. 412/2 Into each of the round holes thus made he introduces two slips of iron called half-rounds, buckings, or feathers, being of wedge form, but round on one side and running to a point.

1875 E. H. Knight Amer. Mech. Dict. II. 1050/1 Files with the larger curvature are known as full half-rounds; others as flat half-rounds.

1978 H. E. L. Andrew Batsford Encycl. Crafts (1988) 130/1 Files, a half round, a hand file, and selection of needle files.

2000 Dolls House & Miniature Scene Aug. 46/2 This column is now sanded to shape. This uses a sanding stick and a half round (½″ across the flat) is ideal, although a triangular shape could also be satisfactory.

1864 Amer. Boy's Bk. Sports & Games i. 97 Half Round.—Having reached the point, where the turning-stake is to be tolled.

1913 Scotsman 22 Sept. 5/3 Orr, who partnered Mr Gairdner, had half rounds for 42 and 37 respectively.

1956 Mt. Dora (Florida) Herald 4 Jan. 5/3 The player penalized 10 points off and that half round shall be played over.

2010 Financial Times 24 July 18/1 Many, many rounds or half-rounds of golf at the local club.

1879 G. B. Goode Catal. Coll. Animal Resources & Fisheries U.S.: Internat. Exhib. 1876 (Bull. U.S. National Mus. No. 14) 77 Half-round spades. For cutting ‘blanket’ piece, to allow blubber-hook to enter.

1984 T. G. Lytle Harpoons & Other Whalecraft vii. 139 A gouge spade, or half-round spade, was used to cut holes in the blubber for attaching hooks or blubber toggles.