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单词 head tree
释义

head treen.

Brit. /ˈhɛd ˌtriː/, U.S. /ˈhɛd ˈtri/
Origin: Formed within English, by compounding. Etymons: head n.1, tree n.
Etymology: < head n.1 + tree n.
1. Mining and Building. Originally: a horizontal supporting beam placed on top of one or more vertical props or posts. In later use also: a horizontal beam on two or more uprights. Cf. crown tree n. at crown n. Compounds 3a.
ΘΚΠ
the world > space > relative position > support > [noun] > that which supports > supporting beam or plank of wood
skid1609
needle1684
head tree1747
sleeper1849
society > occupation and work > workplace > places where raw materials are extracted > mine > [noun] > prop or support
crown tree1449
punch1462
prop1613
slider1653
sole1653
yoking1653
stow-blade1681
pit-bar1708
fork1747
head tree1747
studdle1758
lock piece1778
pit-prop1794
puncheon1815
stow-fork1824
plank tubbing1839
sprag1841
gib1847
chock1853
Tom1858
bratticing1866
pack1867
breastboard1877
brattice1881
wall-plate1881
strap1883
stretcher1883
1747 W. Hooson Miners Dict. sig. Giij The Side-pieces..have a collar on the Top-end in which the Head-tree resteth.
1879 C. F. Gripper Railway Tunnelling Heavy Ground iii. 15 Lacing boards spiked securely from head-tree to head-tree, and from side-tree to side-tree.
1921 Brit. Patent 159,318 1/2 A considerable quantity of timber is required for head trees, side trees, roof poling, wedges and so forth.
2003 Jrnl. Amer. Res. Center Egypt 40 28 He notes mine supports consisting of two upright stone slabs with a ‘cap’ or ‘headtree’.
2008 House Builders Health & Safety Man. §8. 17/2 Height should not be less than 1.2m measured from the top of the sills to the underside of the head tree.
2. U.S. Forestry. In a system where logs are hauled on an overhead cable slung from a number of trees: the tree located nearest the engine used for hauling. Cf. spar tree n. at spar n.1 Compounds 2. Now rare.
ΘΚΠ
the world > food and drink > farming > forestry or arboriculture > lumbering > [noun] > lumbering equipment > structure to which cable fixed
head tree1894
spar tree1925
1894 Electr. Engineer 11 July 33/2 On the head tree two sheaves are placed, one on either side, and on the tail tree a 2-foot steel sheave is chained.
1921 Southern Lumberman 22 Oct. 42/1 The hauling rope after running through a block attached to the head tree is passed through a fall block and the end secured to the carriage.
3. With reference to certain tribal societies: a tall or prominent tree on which heads of decapitated enemies are hung as trophies.
ΚΠ
1922 Nature 23 Mar. 393/2 [Assam.] In the middle of the village stands the head-tree, usually a ficus, on which heads taken in war were hung.
1994 Oceania 65 65 [West Timor.] The smoked heads would either be impaled on poles surrounding the cult house..or secured in the branches of the group's central ‘head tree’..adjacent to the cult house.
2005 B. B. Kumar Naga Identity ii. 41 An easily defensible place and a tree suitable to be the head-tree was necessary for selecting a site for founding the village.
This entry has been updated (OED Third Edition, June 2013; most recently modified version published online March 2022).
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n.1747
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