Defn: An intensely poisonous alkaloid, extracted from aconite.
ACONITUM
Ac`o*ni"tum, n. Etym: [L. See Aconite.]
Defn: The poisonous herb aconite; also, an extract from it.
Strong As aconitum or rash gunpowder. Shak.
ACONTIA
A*con"ti*a, n. pl. Etym: [NL., from Gr. (Zoöl.)
Defn: Threadlike defensive organs, composed largely of nettling cells (cnidæ), thrown out of the mouth or special pores of certain Actiniæ when irritated.
ACONTIAS
A*con"ti*as, n. Etym: [NL., from Gr. (Zoöl.)
Defn: Anciently, a snake, called dart snake; now, one of a genus of reptiles closely allied to the lizards.
ACOPIC
A*cop"ic, a. Etym: [Gr. priv. + (Med.)
Defn: Relieving weariness; restorative.
ACORN A"corn, n. Etym: [AS. æcern, fr. æcer field, acre; akin to D. aker acorn, Ger. ecker, Icel. akarn, Dan. agern, Goth. akran fruit, akrs field; — orig. fruit of the field. See Acre.]