Something, usually abnormal, which grows out of something else.
The epenthesis of a consonant, e.g., warmth as [ˈwɔrmpθ] (adding a [p] between [m] and [θ]), or -t (Etymology 2).
A disfiguring or unwanted mark or adjunct.
An abnormal growth protruding from a mucous membrane.
A cylindrical coelenterate, such as the hydra, having a mouth surrounded with tentacles.