n.
Function: noun
Date: 14th century
1 a ― see NUMBER table b : one that is next after the first in rank, position, authority, or precedence <the second in line>
2 : one that assists or supports another especially : the assistant of a duelist or boxer
3 a : the musical interval embracing two diatonic degrees b : a tone at this interval specifically : SUPERTONIC c : the harmonic combination of two tones a second apart
4 a plural : merchandise that is usually slightly flawed and does not meet the manufacturer's standard for firsts or irregulars b : an article of such merchandise
5 : the act or declaration by which a parliamentary motion is seconded
6 : a place next below the first in a competition, examination, or contest
7 : SECOND BASE
8 : the second forward gear or speed of a motor vehicle
9 plural : a second helping of food