In extended use. Now archaic and rare.

figurative. (a) A trap or device intended to lure the unwary into error. (b) A hidden or unsuspected danger, difficulty, or opportunity for error.

An act or scheme designed to deceive or entrap, a trick, stratagem, artifice, wile. Also: a lie, a false story.

A hidden element in a proposal, course of action, etc., designed to take advantage of another person; something concealed with the intention of…