tiompán1, m. (gs. & npl. -áin, gpl. ~).1. Tympan, drum. 2. ~ (na cluaise), tympanum, ear-drum. 3. Mus:(a)Lit: Metal-stringed instrument of harp kind. (b) Timbrel, tambourine. Is mairg a loiscfeadh a thiompán leis, it would be a pity to waste one’s last resource on it. (c) Kettle-drum. 4. (a) Hollow. (b) Hump. 5. Deep sheltered cove.