1. 
[syn: pillbox, toque, turban]
2.  a small case for holding pills; 
3.  a small enclosed gun emplacement (usually of fortified concrete); 
WordNet (r) 3.0 (2006):
pillbox
    n 1: a small round woman's hat [syn: pillbox, toque,
         turban]
    2: a small case for holding pills
    3: a small enclosed gun emplacement (usually of fortified
       concrete)
Moby Thesaurus II by Grady Ward, 1.0:
31 Moby Thesaurus words for "pillbox":
   acropolis, bastion, beachhead, blockhouse, bridgehead, bunker,
   castle, citadel, donjon, fasthold, fastness, fort, fortress,
   garrison, garrison house, hold, keep, martello, martello tower,
   mote, motte, peel, peel tower, post, rath, safehold, strong point,
   stronghold, tower, tower of strength, ward