[1] : WordNet (r) 2.0

latch on
     v 1: adopt; "take up new ideas" syn: take up, fasten on, hook
          on, seize on
     2: understand, usually after some initial difficulty; "she
        didn't know what her classmates were plotting but finally
        caught on" syn: catch on, get wise, get onto, tumble,
         cotton on, twig, get it
see also:
take up fasten on hook on seize on catch on get wise 
get onto tumble cotton on twig get it 

Latch >> L Words
Latch, definition of term: Latch
latch_pag1.html

Latch On >> L Words
Latch On, definition of term: Latch On
latch+on_pag1.html