Main Entry:

¹blis·ter

Pronunciation:

\ˈblis-tər\

Function:

noun

Etymology:

Middle English blister, blester, probably from Old English *blýster, *blǣster; akin to Old Norse blāstr swelling, Old English blǣst blast

Date:

14th century

1 : an elevation of the epidermis containing watery liquid 2 : an enclosed raised spot (as in paint) resembling a blister 3 : an agent (as lewisite) that causes blistering 4 : a fungal disease of plants marked by raised patches on the leaves 5 : any of various structures that bulge out (as a gunner's compartment on a bomber)

— blis·tery \-t(ə-)rē\ adjective