Answer: closein

AnswerCrossword Clue
CLOSEIN

Prepare for capture

CLOSEIN

Narrow the gap

CLOSEIN

Prepare to raid

CLOSEIN
Approach
CLOSEIN
Converge (on)
CLOSEINTighten the net (on)
CLOSEINSurround.
CLOSEINEncircle and isolate
CLOSEINSurround, with "on"
CLOSEINEncircle
CLOSEINPen up
CLOSEINDraw near
CLOSEINTighten the circle