dropping;  losing;  missing item;  something one forgot to write down;  trap;  wooden protrusion from a Japanese door frame that fits a hole in the threshold, acting as a lock when closed;  conclusion (of a speech, etc.)
 head (of a household, etc.);  leader;  owner;  proprietor;  subject (of a rumour, etc.);  doer (of a deed);  guardian spirit (e.g. long-resident beast, usu. with mystical powers)