laches / latches [ˈlæʧɪz]
laches – n. – 1. Law negligence or unreasonable delay in pursuing a legal remedy or duty; 2. slackness, negligence
latches – n. pl. & 3rd pres. sing. of latch – n. – 1. a fastening for a gate or door that may be slid or lowered into a groove, hole, etc.; 2. a spring-loaded door lock that can be opened by a key from outside; v. tr. – to fasten, fit, or be fitted as with a latch