gnash (v.)youdaoicibaDictYouDict[gnash 词源字典]
early 15c. variant of Middle English gnasten "to grind the teeth together" in rage, sorrow, or menace (early 14c.), perhaps from Old Norse gnasta, gnista "to gnash the teeth," of unknown origin, probably imitative. Compare German knistern "to crackle," Old English gnidan "to rub, bruise, pound, break to pieces," Danish knaske "crush with the teeth." Related: Gnashed; gnashing.[gnash etymology, gnash origin, 英语词源]
NashvilleyoudaoicibaDictYouDict
capital of Tennessee, U.S., named for Gen. Francis Nash (1742-1777) of North Carolina, U.S. Revolutionary War hero killed at the Battle of Germantown. The surname is attested from 1296 in Sussex Subsidy Rolls, atten Eysse, atte Nasche (with assimilation of -n- from a preposition; see N), meaning "near an ash tree," or "near a place called Ash." In reference to a type of country & western music that originated there, 1963.
unashamed (adj.)youdaoicibaDictYouDict
c. 1500, implied in unashamedness, from un- (1) "not" + ashamed. Related: Unashamedly.