bole (n.)youdaoicibaDictYouDict[bole 词源字典]
early 14c., from Old Norse bolr "tree trunk," from Proto-Germanic *bulas (cognates: Middle Dutch bolle "trunk of a tree"), from PIE *bhel- (2) "to blow, inflate, swell" (cognates: Greek phyllon "leaf," phallos "swollen penis;" Latin flos "flower," florere "to blossom, flourish," folium "leaf;" Old Prussian balsinis "cushion;" Old Norse belgr "bag, bellows;" Old English bolla "pot, cup, bowl;" Old Irish bolgaim "I swell," blath "blossom, flower," bolach "pimple," bolg "bag;" Breton bolc'h "flax pod;" Serbian buljiti "to stare, be bug-eyed;" Serbo-Croatian blazina "pillow").[bole etymology, bole origin, 英语词源]
bug (v.1)youdaoicibaDictYouDict
"to bulge, protrude," 1872, originally of eyes, perhaps from a humorous or dialect mispronunciation of bulge (v.). Related: Bugged; bugging. As an adjective, bug-eyed recorded from 1872; so commonly used of space creatures in mid-20c. science fiction that the initialism (acronym) BEM for bug-eyed monster was current by 1953.