Definitions
1.nounSomething that is number two in a series.
2.nounSomething that is next in rank, quality, precedence, position, status, or authority.
3.nounThe place that is next below or after first in a race or contest.
4.noun(usually in the plural) A manufactured item that, though still usable, fails to meet quality control standards."They were discounted because they contained blemishes, nicks or were otherwise factory seconds."
5.noun(usually in the plural) An additional helping of food."That was good barbecue. I hope I can get seconds."
6.nounA chance or attempt to achieve what should have been done the first time, usually indicating success this time around. (See second-guess.)
7.nounThe interval between two adjacent notes in a diatonic scale (either or both of them may be raised or lowered from the basic scale via any type of accidental).
8.nounThe second gear of an engine.
9.nounSecond base.
10.nounThe agent of a party to an honour dispute whose role was to try to resolve the dispute or to make the necessary arrangements for a duel.
11.nounA Cub Scout appointed to assist the sixer.
12.verbTo agree as a second person to (a proposal), usually to reach a necessary quorum of two. (See under #Etymology 3 for translations.)"I second the motion."
13.verbTo follow in the next place; to succeed.
14.verbTo climb after a lead climber.
15.nounOne-sixtieth of a minute; the SI unit of time, defined as the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of caesium-133 in a ground state at a temperature of absolute zero and at rest.
16.nounA unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.
17.nounA short, indeterminate amount of time."I'll be there in a second."
18.nounOne who supports another in a contest or combat, such as a dueller's assistant.
19.nounOne who supports or seconds a motion, or the act itself, as required in certain meetings to pass judgement etc."If we want the motion to pass, we will need a second."
20.nounAid; assistance; help.
21.verbTo transfer temporarily to alternative employment."The army officer was seconded while he held civil office."
22.verbTo assist or support; to back.
23.verbTo agree as a second person to (a proposal), usually to reach a necessary quorum of two. (This may come from the English adjective above.)"I second the motion."
24.verbTo accompany by singing as the second performer.