Bustl, n. gall, bile, choler
Bustlaidd, a. like gall
Bustlo, v. to yield gall
Buwch, n. a cow
Büyn, n. a bullock
Bw, n. a threat; terror; bugbear interj. of threatening
Bwa, n. a bow, an arch
Bwâd, n. bowing, a bowering
Bwâu, v. to bend like a bow
Bwbach, n. a bugbear, a goblin