Sec.

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.

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

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.

"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.

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

Aid; assistance; help.

Someone entrusted with a secret; a confidant.

A person who keeps records, takes notes and handles general clerical work.

(often capitalized) The head of a department of government.

A managerial or leading position in certain non-profit organizations, such as political parties, trade unions, international organizations.

"Ban Ki-Moon was a secretary general of the United Nations."