apron of a gun;  cover for the touch-hole on a cannon or matchlock
 to start (an argument, a battle, etc.)
 trap door;  removable floor boards
 back cover (e.g. camera, watch, etc.)
 pan lid;  pot lid;  kanji "kettle lid" radical (radical 8)
 lid resting directly on food;  wooden drop-lid for simmering
 there is a suitable spouse for everyone;  every Jack has his Jill; (lit.) a mended lid for a cracked pot
 inner lid;  medium sized lid
 capstone in a cist (archaeology);  dolmen burial chamber
 slip-on lid;  lid going over the edges