Blychyn, n. a small box
Blydd, a. soft, tender; sappy
Blyddiad, n. a rising of sap
Blynedd, n. a year
Blyneddol, a. yearly, animal
Blyngu, v. to grow angry
Blingder, n. a ruffled temper
Blyngu, v. to frown; to ruffle
Blys, n. a longing, a craving
Blysgar, a craving