Answer: closesin

AnswerCrossword Clue
CLOSESINGets nearer
CLOSESINForms an increasingly smaller circle around, with "on"
CLOSESINApproaches one's objective
CLOSESINNears one's target
CLOSESINApproaches
CLOSESINSurrounds.
CLOSESINEnvelops.
CLOSESINConverges (on)
CLOSESINNears, with "on"
CLOSESINPrepares to pounce