oxter
\OK-ster\
noun
1. Scot. and North England. the armpit.
Quotes
You may have The Lives of the English Poets under your oxter, young fellow, but you don't have them in your head so go home and read.
-- Frank McCourt, Tis: A Memoir, 1999
Origin
Oxter came to English in the 1400s and is akin to the Old English ōcusta meaning "armpit," and the Old Norse hōstr meaning "throat."
Dictionary.com
