What does acerose mean?
The definition of acerose
Ac”er*ose`, a.
Etym: [(a) L. acerosus chaffy, fr. acus, gen. aceris, chaff; (b) as if fr. L. acus needle: cf. F. acéreux.] (Bot.)
(a) Having the nature of chaff; chaffy.
(b) Needle-shaped, having a sharp, rigid point, as the leaf of the pine.