brimyoudaoicibaDictYouDict[brim 词源字典]
brim: [13] Brim appears out of the blue at the beginning of the 13th century, meaning ‘edge, border’, with no apparent ancestor in Old English. It is usually connected with Middle High German brem and Old Norse barmr, both ‘edge’, which would point to a prehistoric Germanic source *berm- or *barm-. It has been conjectured that this could derive from the stem *ber- (source of English bear ‘carry’), and that the etymological meaning of brim is thus ‘raised border’. The modern sense ‘rim of a hat’ is first recorded in Shakespeare.
=> bear[brim etymology, brim origin, 英语词源]
brim (n.)youdaoicibaDictYouDict
c. 1200, brymme "edge of the sea," of obscure origin, perhaps akin to Old Norse barmr "rim, brim," probably related to German bräme "margin, border, fringe," from PIE *bhrem- "point, spike, edge." (Old English had brim in the sense "sea, surf," but this probably was from the Germanic stem *brem- "to roar, rage.") Extended by 1520s to cups, basins, hats.
brim (v.)youdaoicibaDictYouDict
"to fill to the brim," 1610s, from brim (n.). Intransitive sense ("be full to the brim") attested from 1818. Related: Brimmed; brimming.