second definition

1. 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
2. the fielding position of the player on a baseball team who is stationed near the second of the bases in the infield
3. following the first in an ordering or series
• examples: he came in a close second
4. a 60th part of a minute of arc
• examples: the treasure is 2 minutes and 45 seconds south of here
5. the official attendant of a contestant in a duel or boxing match
6. a speech seconding a motion
• examples: do I hear a second?
7. the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle
• examples: he had to shift down into second to make the hill
8. give support or one's approval to
• examples: I'll second that motion
• examples: I can't back this plan
• examples: endorse a new project
9. transfer an employee to a different, temporary assignment
• examples: The officer was seconded for duty overseas
10. coming next after the first in position in space or time or degree or magnitude
11. a part or voice or instrument or orchestra section lower in pitch than or subordinate to the first
• examples: second flute
• examples: the second violins
12. in the second place
• examples: second, we must consider the economy