Dictionary

Something that is number two in a series.

Something that is next in rank, quality, precedence, position, status, or authority.

The place that is next below or after first in a race or contest.

(usually in the plural) A manufactured item that, though still usable, fails to meet quality control standards.

Example: They were discounted because they contained blemishes, nicks or were otherwise factory seconds.

To agree as a second person to (a proposal), usually to reach a necessary quorum of two. (See under #Etymology 3 for translations.)

Example: I second the motion.

To follow in the next place; to succeed.

To climb after a lead climber.

Number-two; following after the first one with nothing between them. The ordinal number corresponding to the cardinal number two.

Example: He lives on Second Street.

Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior.

Being of the same kind as one that has preceded; another.

Example: Residents of Texas prepared for Hurricane Harvey, which would in some ways turn out to become the second Hurricane Katrina.

(with superlative) After the first; at the second rank.

Example: Saturn is the second largest planet.

After the first occurrence but before the third.

Example: He is batting second today.

One-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.

A unit of angle equal to one-sixtieth of a minute of arc or one part in 3600 of a degree.

A short, indeterminate amount of time.

Example: I'll be there in a second.

One who supports another in a contest or combat, such as a dueller's assistant.

One who supports or seconds a motion, or the act itself, as required in certain meetings to pass judgement etc.

Example: If we want the motion to pass, we will need a second.

Aid; assistance; help.

To transfer temporarily to alternative employment.

Example: The army officer was seconded while he held civil office.

To assist or support; to back.

To agree as a second person to (a proposal), usually to reach a necessary quorum of two. (This may come from the English adjective above.)

Example: I second the motion.

To accompany by singing as the second performer.