Jamb n. : The vertical side of any opening, as a door or fireplace; hence, less properly, any narrow vertical surface of wall, as the of a chimney-breast or of a pier, as distinguished from its face.

Jamb n. : Any thick mass of rock which prevents miners from following the lode or vein.

Jamb v. t. : See Jam, v. t.

Example:
how to build a french door Jamb?

Taxonomy
UME, JAMB, Decree, Polytechnic, Application Requirements, No. 2, PCE, Matriculation Examination, Matriculation, examinations, brochure, Joint Admissions and Matriculation Board, Colleges of education, Universities in Nigeria, Application Statistics, Educations, candidates, courses.

Defination from the web:
... Home Contact JAMB What's new. The legal instrument establishing the Board was promulgated by the Act (No. 2 of 1978) of the Federal Military Government on 13th February, 1978. ...