trimaran

n boat built like a catamaran but with three parallel hulls instead of two 三体船（有三个平行的船身）.

trifle, trifler, trifling, trigger, trigger-happy, triglyceride, trigonometric, trigonometrical, trigonometrically, trigonometry, trike, trilateral, trilaterally, trilby, trilingual, trill, trillion, trillionth, trilobite, trilogy, trim, trimmer, trimming, trinitrotoluene, trinity, Trinity Sunday, trinket, trio, trip, trip sb. up, trip-wire, tripartite, tripe, triple, triplet, triplicate, triply, tripod, tripper, tripping, trippingly,