Ac"er*ose` (#), a. [(a) L. acerosus chaffy, fr. acus, gen. aceris, chaff; (b) as if fr. L. acus needle: cf. F. ac'ereux.] Bot. (a)
Having the nature of chaff; chaffy.
(b)
Needle-shaped, having a sharp, rigid point, as the leaf of the pine.
© Webster 1913.