chase

A groove cut in an object; a slot: the chase for the quarrel on a crossbow.

(architecture) A trench or channel or other encasement structure for encasing (archaically spelled enchasing) drainpipes or wiring; a hollow space in the wall of a building encasing ventilation ducts, chimney flues, wires, cables or plumbing.

The part of a gun in front of the trunnions.

The cavity of a mold.

(shipbuilding) A kind of joint by which an overlap joint is changed to a flush joint by means of a gradually deepening rabbet, as at the ends of clinker-built boats.