dugout  
noun [ C ] uk/ˈdʌɡ.aʊt/ us/ˈdʌɡ.aʊt/
  (SHELTER)       
  (通常为士兵用的)防空洞,地下掩体
a shelter, usually for soldiers, made by digging a hole in the ground and covering it
  (运动场边的)队员座席
a shelter for the members of a team at the side of a sports field
   (BOAT)     
 (also dugout canoe)独木舟 
a small light boat made by cutting out the middle of a tree trunk