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Verb: close in
  1. Advance or converge on
    "The police were closing in on him";
    - draw in
  2. Surround completely
    "They closed in the porch with a fence";
    - enclose, inclose, shut in

Derived forms: closes in, closed in, closing in

Type of: advance, border, environ, go on, march on, move on, pass on, progress, ring, skirt, surround