The dictionary defines the word homebody as "a person who prefers pleasures and activities that center around the home." If the dictionary had more space, it might say more. It might define a homebody as someone who, when they go away even for a few days, misses the view out the window over the kitchen sink.
Who longs for the sound of the clock that chimes on the hour and the yellow warblers that sing in the meadow.
Who misses the morning paper, the cats, the dog, the local NPR station, the comforting familiarity of the grocery store and phone calls from friends, though not necessarily in that order.
Who is never happier than when she turns the key in the lock and opens the door.