1not sufficiently strict, severe, or careful:lax security arrangements at the airporthe’d been a bit lax about discipline in school lately
2(of the limbs or muscles) relaxed:muscles have more potential energy when they are stretched than when they are lax
(of the bowels) loose.
Phonetics (of a speech sound, especially a vowel) pronounced with the vocal muscles relaxed:The opposite of tense1.the merger of tense and lax vowels before ‘l’
