The adj lax has 5 senses (first 1 from tagged texts)
1. (1) lax, slack -- (lacking in rigor or strictness; "such lax and slipshod ways are no longer acceptable"; "lax in attending classes"; "slack in maintaining discipline")
2. lax -- (pronounced with muscles of the tongue and jaw relatively relaxed (e.g., the vowel sound in `bet'))
3. lax -- (not taut or rigid; not stretched or held tight; "a lax rope")
4. flaccid, lax, limp, slack -- (lacking in strength or firmness or resilience; "flaccid muscles"; "took his lax hand in hers"; "gave a limp handshake"; "a limp gesture as if waving away all desire to know" G.K.Chesterton; "a slack grip")
5. lax, loose -- (emptying easily or excessively; "loose bowels")