batsqueak

== English == === Etymology === From bat +‎ squeak. === Pronunciation === (UK) IPA(key): /ˈbatskwiːk/ === Noun === batsqueak (plural batsqueaks) The ultrasonic noise emitted by a bat, especially as used for echolocation. A faint echo (of something); a tiny pulse, a slight wave (of feeling, emotion etc.). 2002, Melveena McKendrick, "Men Behaving Badly", Identities in Crisis, Reichenberger 2002, p. 220: Gómez Arias, like don Álvaro, dies without our feeling a batsqueak of regret because neither is given any redeeming features.