coip, v.t. & i. (pp. ~the). 1. Ferment; froth, foam. Giosta ag ~eadh, yeast fermenting. Bainne ag ~eadh, milk simmering. Leann ag ~eadh, beer foaming. Fíon ag ~eadh, wine sparkling. Farraige choipthe, surging, angry, sea. Duine a choipeadh, to get s.o. worked up. Bhí a chuid fola ag ~eadh, his blood was boiling. 2. Cu: Whip. Uachtar ~the, whipped cream. Prátaí ~the, creamed potatoes.