n.
Function: verb
Etymology: perhaps akin to British dialect tumpoke to fall head over heels
Date: 1967
intransitive verb chiefly Southern : to tip or turn over especially accidentally ― usually used with over <sooner or later everybody tump s over. Nothing to worry about if you don't get caught under the canoe ― Don Kennard>
transitive verb chiefly Southern : to cause to tip over : OVERTURN , UPSET ― usually used with over