| 单词 | gill flap | 
| 释义 | > as lemmasgill flap   gill flap  n. 		 (a) (in bony fishes) the branchiostegal membrane, which encloses the underside of the gill chamber (cf. gill membrane n.); (occasionally also) the gill cover or operculum;		 (b) a flap of tissue bearing a gill, as in the gill book of a horseshoe crab. ΚΠ 1785    A. Monro Struct. & Physiol. Fishes 104 		(key to figure)	  				B, The gill flap. 1854    C. D. Badham Prose Halieutics 241  				A palm-tree, which it climbed by hooking its spinous gill-flaps into the inequalities of the bark. 1901    Proc. Acad. Nat. Sci. Philadelphia 1900 353  				The posterior and lower margins of the operculum form a small fleshy gill-flap. 1913    Jrnl. Biol. Chem. 14 p. xl  				Attached to the gill flaps of limulus are rods of cartilage-like tissue. 1977    Jrnl. Paleontol. 51 Suppl. 5  				Limbs on the posterior thorax bear gills in which the filaments are attached to a gill flap and represent a type from which a Limulus-gill could have derived. 2016    A. Schloss  & D. Joachim Williams-Sonoma Grill School 122/1  				Looking more closely at the head of the fish, lift the gill flaps at the back of the head and inspect the spongy gills inside. < as lemmas  | 
	
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