Wedge  —n. 1 piece of tapering wood or metal etc. Driven between two objects or parts to secure or separate them. 2 anything resembling a wedge. 3 golf club with a wedge-shaped head. —v. (-ging) 1 secure or fasten with a wedge. 2 force open or apart with a wedge. 3 (foll. By in, into) pack or thrust (a thing or oneself) tightly in or into.  thin end of the wedge colloq. Thing of little importance in itself, but likely to lead to more serious developments. [old english]