pismire (n.)

"ant," late 14c., pisse-mire (early 14c. as a surname, Henricus pessemere), from pyss "urine" (said to be in reference to the acrid smell of an anthill) + mire "an ant" (mid-13c., early 13c. as a surname), perhaps from an unattested Old English word or from Old Norse maurr "ant" (cognate with Swedish myra, Danish myre, Middle Dutch miere, Dutch mier, Crimean Gothic miera "ant"), from PIE *morwi- (see Formica (2)). Compare pissant, also Old Frisian pis-imme, Norwegian migemaur (first element from Latin mingere); early Dutch mierseycke (with seycke "urine"), Finnish kusiainen (with kusi "urine").

He is as angry as a pissemyre,
Though þat he haue al that he kan desire.

Applied contemptuously to persons from 1560s.

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Definitions of pismire from WordNet

pismire (n.)
social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers;
Synonyms: ant / emmet