I. intransitive verb
: to incline inward above the waterline or greatest breadth : fall home — compare batter III; used chiefly of the sides of a ship
II. noun
: a receding upward slope (as of a ship's sides) : an inclination inward from the greatest breadth
as in all ships of the period, her sides have considerable tumble home — H.G.Smith
the tumble home of a building toward the top