| 释义 |
black-head|ˈblækhɛd|
1. A name given to various black-headed birds; e.g. a kind of white pigeon with a black head, the Black-headed Gull (Larus ridibundus), etc.
1658Rowland Mouffet's Theat. Ins. 1088 Meal-worms..seem to be bred to catch black-heads and Nightingales. 1741Compl. Fam. Piece iii. 512 The Black-Head is a white Pidgeon with a black Head. 1806P. Neill Tour Orkn. & Shetl. 201. 1844 W. H. Maxwell Sports & Adv. Scotl. xx. (1855) 174 What obliging birds the blackheads are!
2. Angling. A variety of the Marsh-worm.
1875‘Stonehenge’ Brit. Sports i. v. ii. §3 A variety of this [the marsh] worm..is called in Scotland the Black-head.
3. pl. Name for the Reed Mace (Typha latifolia).
4. = comedo.
1837J. F. Palmer Gloss. in ‘A Lady’ Dialogue Devonshire Dial. 30 Blackhead, a boil or pinswell, from the black spot which appears at the apex. 1885[see comedo]. 1910Daily Chron. 15 Jan. 9/1 Sometimes blackheads gather in the forehead lines,..they must be pressed out with the blackhead instrument, if steaming and massage fail to remove them. 1949E. de Mauny Huntsman in Career iii. iii. 160 His skin was tanned deep brown, which somehow accentuated the blackheads.
5. Vet. An infectious disease of turkeys and other birds caused by the protozoon parasite Histomonas meleagridis, producing a bluish-black discoloration of the head.
1902U.S. Dept. Agric. Experiment Station Rec. XIII. 287. 1906 U.S. Dept. Agric. Bureau Animal Ind. Circular No. 5 (title) Blackhead, or infectious entero-hepatitis in turkeys. 1955Gaiger & Davies Vet. Path. & Bacteriol. (ed. 4) xxiii. 468 In dealing with blackhead emphasis should be placed on prevention.
6. attrib. = black-headed a.
1827J. L. Williams View W. Florida 30 Black-head fly catcher. 1835J. Martin Gaz. Virginia 483 A great variety of ducks as..the red head shoveler, the black head shoveler. |