Blain

n.	1.	An inflammatory swelling or sore; a bulla, pustule, or blister. Blotches and blains must all his flesh emboss. - Milton.
	2.	(Far.) A bladder growing on the root of the tongue of a horse, against the windpipe, and stopping the breath.

Noun

1.

blain - an inflammatory swelling or sore

chilblain, chilblains, pernio, sore