Trwydded, n. a pass, a passport, a licence, a fare, a reception
Trwyddedog, a. having licence
Trwyddedogi, v. to give free passage
Trwyddedu, v. to pass freely
Trwyddo, v. to pass through; to bore
Trwyll, n. a swivel, a ring
Trwylliad, n. a swivelling
Trwyllo, v. to swivel; to troll
Trwyn, n. a point; a snout, a nozzle, a nose
Trwynswch, n. tip of the nose