tympanum

n (pl ~s or -na /-nE; -nE/) (anatomy 解) 1 ear-drum 鼓膜; 耳膜. 2 middleear 鼓室; 中耳.

two-bit, two-dimensional, two-edged, two-faced, two-handed, two-piece, two-ply, two-seater, two-time, two-timer, two-tone, two-way, twofold, twopence, twopenny, twopenny-halfpenny, twosome, tycoon, tying, tyke (also tike), type, type-cast, type-face (also face), typescript, typesetter, typewrite, typewriter, typewritten, typhoid, typhoon, typhus, typical, typical of, typically, typify, typist, typo, typo-graphically, typographer, typographical,