A bony, often sharp, protuberance, especially that of the ischium.
Quickness of perception or discernment; penetration of mind; the faculty of nice discrimination.
A sharp, tapering point extending from a plant.
A small protuberance on a bone which articulates into another bone to form a ball-and-socket joint.
The head-like mouthpart apparatus of a tick, including the palpi, mandibles, and hypostome.
A densely clustered inflorescence composed of a large number of individual florets arising from a platform-like base.