laxyoudaoicibaDictYouDict[lax 词源字典]
lax: see lease, relish
[lax etymology, lax origin, 英语词源]
lax (adj.)youdaoicibaDictYouDict
c. 1400, "loose" (in reference to bowels), from Latin laxus "wide, loose, open," figuratively "loose, free, wide," from PIE root *(s)leg- "to be slack, be languid" (cognates: Greek legein "to leave off, stop," lagos "hare," literally "with drooping ears," lagnos "lustful, lascivious," lagaros "slack, hollow, shrunken;" Latin languere "to be faint, weary," languidis "faint, weak, dull, sluggish, languid"). Of rules, discipline, etc., attested from mid-15c.
lax (n.)youdaoicibaDictYouDict
"salmon," from Old English leax (see lox).