(botany, anatomy) A spur-like projection.

The unlawful personal appropriation of public lands; wrongful encroachment on, or enclosure of properties belonging to the public (e.g. highways, sidewalks, forests, harbors).

(science fiction, fandom slang, often derogatory) A stock character in science fiction; a grotesque creature, often an extraterrestrial, that menaces the protagonists.

Someone who baulks.