Nearby words

  1. lat,
  2. lat.,
  3. latah,
  4. latakia,
  5. latam,
  6. latch hook,
  7. latch needle,
  8. latch on,
  9. latch onto,
  10. latchet

Origin of latch

before 950; 1930–35 for def 5; Middle English lacchen, Old English lǣccan to take hold of, catch, seize; akin to Greek lázesthai to take

Related formsre·latch, verb (used with object) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for latch on

latch on

verb (intr, adverb often foll by to) informal

to attach oneself (to)to latch on to a new acquaintance
to understandhe suddenly latched on to what they were up to
US and Canadian to obtain; get


/ (lætʃ) /


a fastening for a gate or door that consists of a bar that may be slid or lowered into a groove, hole, etc
a spring-loaded door lock that can be opened by a key from outside
Also called: latch circuit electronics a logic circuit that transfers the input states to the output states when signalled, the output thereafter remaining insensitive to changes in input status until signalled again


to fasten, fit, or be fitted with or as if with a latch

Word Origin for latch

Old English læccan to seize, of Germanic origin; related to Greek lazesthai

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for latch on
Online Etymology Dictionary, © 2010 Douglas Harper