You searched for: “aculeus
aculeus (s) (noun), aculei (pl)
1. The sting of an animal: Hymenopterous insects possess aculei as that of a scorpion, which can be combined with a poison gland.
2. A conical elevation of the skin of a plant, becoming hard and sharp-pointed: Brambles and rosebushes are noted of having aculei , and can be dangerous if they prick a person's skin.
3. A hair-like projection: Some kinds of cacti have aculei that one can hardly see, but can be painful if touched!
This entry is located in the following unit: acuto-, acut-, acuti-, acu-, -cusis; also, agu- (page 2)