I. ˈblis-tər 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
II. verb
( blis·tered ; blis·ter·ing -t(ə-)riŋ)
Date: 15th century
intransitive verb
: to become affected with a blister
transitive verb
1. : to raise a blister on
2. : lambaste 2