1745 R. Mead (ed. 3) 73 Fig. 2 Shews the same head, with its poison-gland, and the several muscles subservient to the motions of the jaws.
1849–52 IV. ii. 888/2 The fang appears..to be perforated by the duct of the poison-gland.
1995 P. J. Hayward & J. S. Ryland xii. 662 Echinoderms... One type has poison glands for dealing with small intruding crustaceans, etc.