Trimmer 2 : A joist into which the ends of other joists are framed to form an opening or well. Trimmer (electrical). A small, semi-adjustable condenser that enables condensers to be ganged accurately
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}