mantrap

noun

Etymology: From man + trap.

1. A mechanical device for catching trespassers.

   “A prevalent custom is the "pomali," exactly equivalent to the "taboo" of the Pacific islanders, and equally respected. It is used on the commonest occasions, and a few palm leaves stuck outside a garden as a sign of the "pomali" will preserve its produce from thieves as effectually as the threatening notice of man-traps, spring guns, or a savage dog would do with us.”

   “The space had been cleared of landmines and mantraps.”

2. A small space with two sets of interlocking doors, such that the first set of doors must close before the second set opens, used to restrict access.
3. A woman who is dangerously seductive to men.

   “"Don't know the manners of good society, eh? Wal, I guess I know enough to turn you inside out, old gal — you sockdologizing old man-trap."”

   “If anything, she was worse since she had enough money to implement her desires. They were merely in the trade for business reasons. No—Eloise would be something to steer clear of. Alexander was right. She was a mantrap.”