2. The part of anything which is beneath the contents and supports them, as the part of a chair on which a person sits, the circular base or lower head of a cask or tub, or the plank floor of a ships hold; the under surface. Barrels with the bottom knocked out. (Macaulay) No two chairs were alike; such high backs and low backs and leather bottoms and worsted bottoms. (W. Irving)
3. That upon which anything rests or is founded, in a literal or a figurative sense; foundation; groundwork.
5. The fundament; the buttocks.
6. An abyss.
8. The part of a ship which is ordinarily under water; hence, the vessel itself; a ship. My ventures are not in one bottom trusted. (Shak) Not to sell the teas, but to return them to london in the same bottoms in which they were shipped. (Bancroft) full bottom, a hull of such shape as permits carrying a large amount of merchandise.
10. Dregs or grounds; lees; sediment. at bottom, At the bottom, at the foundation or basis; in reality. He was at the bottom a good man. to be at the bottom of, to be the cause or originator of; to be the source of. He was at the bottom of many excellent counsels. (Addison) to go to the bottom, to sink; especially. To be wrecked. To touch bottom, to reach the lowest point; to find something on which to rest.
Origin: oe. Botum, botme, as. Botm; akin to os. Bodom, D. Bodem, OHG. Podam, g. Boden, Icel. Botn, Sw. Botten, dan. Bund (for budn), L. Fundus (for fudnus), gr. (for), Skr. Budhna (for bhudhna), and ir. Bonn sole of the foot, W. Bon stem, base. 257>. Cf. 4th Found, fund.