- (of days) to become shorter with the approach of winter
- followed by on or upon: to advance (on) so as to encircle or surround
Collins Concise English Dictionary © HarperCollins Publishers::
close in /kləʊz/ vb (intransitive, adverb)
close-in
(klōs′in′),USA pronunciation adj.
- near, as to a common center;
adjacent, esp. to a city:The city is enveloping its close-in suburbs. - occurring or provided at close quarters:Fighter planes provided daring close-in air support.
'close in' also found in these entries (note: many are not synonyms or translations):