Meaning of LATCH ON

WordNet Dictionary
	Definition:		[v]  understand, usually after some initial difficulty [v]  adopt, as of ideas
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	Synonyms:		catch on, cotton on, fasten on, get it, get onto, hook on, seize on, take up, tumble, twig
	See Also:		adopt, apprehend, compass, comprehend, dig, embrace, espouse, get the picture, grasp, savvy, sweep up