DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   lax
       adj 1: lacking in rigor or strictness; "such lax and slipshod
              ways are no longer acceptable"; "lax in attending
              classes"; "slack in maintaining discipline" [syn: lax,
              slack]
       2: pronounced with muscles of the tongue and jaw relatively
          relaxed (e.g., the vowel sound in `bet') [ant: tense]
       3: lacking in strength or firmness or resilience; "a lax rope";
          "a limp handshake" [ant: tense]
       4: emptying easily or excessively; "loose bowels" [syn: lax,
          loose]