(dated) A knot tied in a tuft of grass, intended to trip another person as a prank.

Alternative form of beartrap

Alternative form of rattrap

(golf) A sand-filled hollow, on a golf course, used as a hazard; a bunker. / (architecture) A basin that prevents the passage of sand etc into a drainage system.

(literally) A cage containing a banana with a hole large enough for a monkey's hand to fit in, but not large enough for a monkey's fist (clutching a banana) to come out; anecdotally used to catch monkeys that lack the intellect to let go of the banana and run away.

(management) The risk of employees spending significant effort looking busy with an activity at the expense of measuring progress toward what the activity is ultimately supposed to achieve.

(derogatory) An establishment, such as a shop or display, where tourists are encouraged to spend money on goods or services not necessarily of good value.

Alternative form of trapdoor

A device, usually a foam block, placed in the corner of a control room or listening room in order to reduce unwanted low-frequency noises.

(rare) Alternative form of fish trap