"stump [stuhmp]: noun: the part of a tree or plant remaining in the earth after the stem or trunk is cut off; the stub. ... verb: to nonplus, embarrass, or render completely at a loss."
--"Stump" entry, Concise Oxford English Dictionary: 11th Edition
"If you wish in this world to advance
Your merits you're bound to enhance;
You must stir it and stump it,
And blow your own trumpet,
Or, trust me, you haven't a chance."
--William Gilbert, Ruddigore
"'How in the world did I lose that hand?' Tom asked, stumped."
The PHILOLEXIAN SOCIETY chops down the redwood you've been living in, sells the wood to Hallmark, and writes you an invitation to its ninth debate of the semester on the resulting stationery.
RESOLVED: Stump speech.
WHEN: This Thursday (11/4) at 8:30. Rephreshments to precede the meeting.
WHERE: The Satow Room, Lerner Hall
Better come ready to improvise, or you won't have a leg to stand on.