(trading) A stock whose price has dropped rapidly.

A large, sharp knife, used by the butcher for hacking meats.

a tanto (Japanese knife)

A knife, usually with a fixed double-edged blade, that is carried inside a sheath or attached to a boot.

(underwater diving) a type of knife used by divers, with a wide, serrated blade.

a knife intended for survival purposes in a wilderness environment, often in an emergency situation when the user has lost other equipment.

simple past tense and past participle of jack-knife

Third-person singular simple present indicative form of jack-knife

Undergoing a surgical procedure; into surgery.

A cutting tool that has an interchangeable blade that retracts into the handle.