taro tant

Literally, “to strike a chord”.

taro tant (first-person singular present trawaf tant)

1. (idiomatic) to strike a chord

• taro'r nod, taro'r nodyn (“to hit the mark”)
• (chiefly negative) taro deuddeg (literally “to hit twelve”)

R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “taro tant”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies