Webster's Revised Unabridged Dictionary · 1913

Second

Second , adjective

[French, from Latin secundus second, properly, following, from sequi to follow. See Sue to follow, and compare Secund.]

1.
Immediately following the first; next to the first in order of place or time; hence, occurring again; another; other.
And he slept and dreamed the second time. — Gen. xli. 5
2.
Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior.
May the day when we become the second people upon earth... be the day of our utter extirpation. — Landor
3.
Being of the same kind as another that has preceded; another, like a prototype; as, a second Cato; a second Troy; a second deluge.
A Daniel, still say I, a second Daniel! — Shakespeare
On second thoughts, gentlemen, I don't wish you had known him. — Dickens

Second , noun

1.
One who, or that which, follows, or comes after; one next and inferior in place, time, rank, importance, excellence, or power.
Man An angel's second, nor his second long. — Young
2.
One who follows or attends another for his support and aid; a backer; an assistant; specifically, one who acts as another's aid in a duel.
Being sure enough of seconds after the first onset. — Sir H. Wotton
3.
Aid; assistance; help. [Obsolete]
Give second, and my love Is everlasting thine. — J. Fletcher
4.
An article of merchandise of a grade inferior to the best; esp., a coarse or inferior kind of flour.
5.
The sixtieth part of a minute of time or of a minute of space, that is, the second regular subdivision of the degree; as, sound moves about 1,140 English feet in a second; five minutes and ten seconds north of this place.
6.
In the duodecimal system of mensuration, the twelfth part of an inch or prime; a line. See Inch, and Prime, n., 8.
7.
(a) (Music) The interval between any tone and the tone which is represented on the degree of the staff next above it.
(b)
(Music) The second part in a concerted piece; -- often popularly applied to the alto.
8.
(Parliamentary Procedure) A motion in support of another motion which has been moved in a deliberative body; a motion without a second dies without discussion.
Collocations (1)
Second hand , the hand which marks the seconds on the dial of a watch or a clock.

Second , transitive verb

[Compare French seconder, Latin secundare, from secundus. See Second, a.]

1.
To follow in the next place; to succeed; to alternate. [Rare]
In the method of nature, a low valley is immediately seconded with an ambitious hill. — Fuller
Sin is seconded with sin. — South
2.
To follow or attend for the purpose of assisting; to support; to back; to act as the second of; to assist; to forward; to encourage.
We have supplies to second our attempt. — Shakespeare
In human works though labored on with pain, A thousand movements scarce one purpose gain; In God's, one single can its end produce, Yet serves to second too some other use. — Pope
3.
(Parliamentary Procedure) to support, as a motion{6} or proposal, by adding one's voice to that of the mover or proposer.

Under common parliamentary rules used by many organizations, especially legislative bodies, a motion must be seconded in order to come properly before the deliberative body for discussion. Any motion{6} for which there is no second{8} dies for lack thereof.