(nautical) A space in the forward part of the ship, typically beneath the bow in front of the foremost collision bulkhead, that contains the anchor chain when the anchor is secured for sea.

(idiomatic) A forbidden room.

(historical, cryptography, informal) A government or royal court's cryptanalyst department.

Alternative form of separate the wheat from the chaff

A device that allows a door to be partially opened from the inside, whilst preventing it from being fully opened from the outside

(nautical) Synonym of boatswain's chair

Possibly; perhaps.

plural of chain complex

(derogatory) a legal or administrative body with strict, arbitrary rulings and secretive proceedings

Alternative form of post chaise