peeled egg; shelled egg
A hard-boiled egg with the shell removed; used in cooking and bento.
I put peeled eggs in oden.
Peeled eggs are convenient for bento.
fully naked woman
Rare slang; a metaphorical extension likening a naked woman to a peeled egg.
I came across the slang term 'mukitamago' online.
Standard kanji spelling; 卵 is the usual character for 'egg'.
Alternate spelling using 玉子, also common for 'egg' in cooking contexts.
Compound of むき (peeling, from むく 'to peel') + 卵 (egg). The slang sense is a metaphorical extension.