[close in] vt (14c) 1: to encircle closely and isolate
2: to enshroud to such an extent as to preclude entrance or exit "the airport was closed in by the storm" ~ vi 1: to gather in close all around with an oppressing or isolating effect "despair closed in on her"
2: to approach to close quarters esp. for an attack, raid, or arrest "the police closed in"
3: to grow dark "the short November day was already closing in --Ellen Glasgow"