glabella (n.)youdaoicibaDictYouDict[glabella 词源字典]
"space between the eyebrows," 1590s, Modern Latin, noun use of fem. of adjective glabellus "without hair, smooth," diminutive of glaber "smooth, bald," from PIE *gladh- "smooth" (see glad) + diminutive word-forming element -ella. As the word for a part of the head of a trilobite, from 1849.[glabella etymology, glabella origin, 英语词源]
Parabellum (n.)youdaoicibaDictYouDict
proprietary name for a type of automatic firearm, 1904 (Mauser & Deutsche Waffen und Munitionsfabriken), from Latin phrase si vis pacem, para bellum, from para, imperative of parare "to prepare" (see para- (2)) + bellum "war" (see bellicose).
labellumyoudaoicibaDictYouDict
"Each of a pair of lobes at the tip of the proboscis in some insects", Early 19th century: from Latin, diminutive of labrum 'lip'.