English Dictionary

aculeus

noun

(botany) A sharp spike or other projection growing on a plant, as in some brambles and roses. / A sting.

The aculeus of the bee is used for defense.

意味（1）

(botany) A sharp spike or other projection growing on a plant, as in some brambles and roses.

Many plants, like many animals, are furnished with arms for their protection; these are either aculei, prickles, as in rose and barberry, which are formed from the outer bark of the plant; or spinæ, thorns […] .

意味（2）

A sting.