Chapter Bother to Bouk of B by Webster's Dictionary (1913 Edition)

9. Power of endurance; as, a horse of a good bottom.

10. Dregs or grounds; lees; sediment. Johnson.

At bottom, At the bottom, at the foundation or basis; in reality. "He was at the bottom a good man." J. F. Cooper. — To be at the bottom of, to be the cause or originator of; to be the source of. [Usually in an opprobrious sense.] J. H. Newman.

He was at the bottom of many excellent counsels.
Addison.

—

To go to the bottom, to sink; esp. to be wrecked. — To touch bottom, to reach the lowest point; to find something on which to rest.

Bottom
(Bot"tom), a. Of or pertaining to the bottom; fundamental; lowest; under; as, bottom rock; the bottom board of a wagon box; bottom prices.

Bottom glade, a low glade or open place; a valley; a dale. Milton.

—

Bottom grass, grass growing on bottom lands. — Bottom land. See 1st Bottom, n., 7.

Bottom
(Bot"tom), v. t. [imp. & p. p. Bottomed ; p. pr. & vb. n. Bottoming.]

1. To found or build upon; to fix upon as a support; — followed by on or upon.

Action is supposed to be bottomed upon principle.
Atterbury.

Those false and deceiving grounds upon which many bottom their eternal state].
South.

2. To furnish with a bottom; as, to bottom a chair.

3. To reach or get to the bottom of. Smiles.

Bottom
(Bot"tom), v. i.

1. To rest, as upon an ultimate support; to be based or grounded; — usually with on or upon.

Find on what foundation any proposition bottoms.
Locke.

2. To reach or impinge against the bottom, so as to impede free action, as when the point of a cog strikes the bottom of a space between two other cogs, or a piston the end of a cylinder.

Bottom
(Bot"tom), n. [OE. botme, perh. corrupt. for button. See Button.] A ball or skein of thread; a cocoon. [Obs.]

Silkworms finish their bottoms in . . . fifteen days.
Mortimer.

Bottom
(Bot"tom), v. t. To wind round something, as in making a ball of thread. [Obs.]

As you unwind her love from him,
Lest it should ravel and be good to none,
You must provide to bottom it on me.
Shak.

Bottomed
(Bot"tomed) a. Having at the bottom, or as a bottom; resting upon a bottom; grounded; — mostly, in composition; as, sharp-bottomed; well-bottomed.

Bottomless
(Bot"tom*less), a. Without a bottom; hence, fathomless; baseless; as, a bottomless abyss. "Bottomless speculations." Burke.