Bat
Etymology

An older English name for bats is flittermouse, which matches their name in other Germanic languages (for example German Fledermaus and Swedish fladdermus), related to the fluttering of wings. Middle English had bakke, most likely cognate with Old Swedish natbakka (' night-bat '), which may have undergone a shift from -k- to -t- (to Modern English bat) influenced by Latin blatta, ' moth, nocturnal insect '. The word bat was probably first used in the early 1570s. The name Chiroptera derives from Ancient Greek: χείρ – cheir, ' hand ' and πτερόν – pteron, ' wing '.
change_case:english_capital, oulipo:avoid_letter[o], keywords:frequency