seinn, v.t. & i. (vn. -inm). 1. Play (music, musical instrument). Seinm ar fheadóg, ar veidhlín, to play on a whistle, on a violin. Port a sheinm, to play a tune. Ag seinm ceoil, playing music. Ag seinm téad, playing string music. Tá tú i gcónaí ag seinm ar an téad sin, you are always harping on that string. S.a. port11. 2. Sing, warble, chatter. (a)Éin ag seinm, birds singing. Tá sí ag seinm léi, she is chattering away. Chuir sin ag seinm é, that loosened his tongue. ~ amach é, sing it out loud. ~ leat, talk away. (b) (Of food) Go ~e sé siar ort! (to greedy eater) May it make you break wind!