Lach"es (?), Lache (?), n. [OF. lachesse, fr. lache lax, indolent, F. lache, ultimately fr. L. laxus loose, lax. See Lax.] Law
Neglect; negligence; remissness; neglect to do a thing at the proper time; delay to assert a claim.
It ill became him to take advantage of such a laches with the eagerness of a shrewd attorney.
© Webster 1913.