1. (Science: medicine) A celebrated fairy, the merry wanderer of the night; called also robin Goodfellow, friar rush, pug, etc. He meeteth Puck, whom most men call Hobgoblin, and on him doth fall. (Drayton)
2. (Science: zoology) The goatsucker.
Origin: OE. Pouke; cf. OSw. Puke, Icel. Puki an evil demon, W. Pwca a hobgoblin. Cf. Poker a bugbear, Pug.