second in WordNet English dictionary

1. coming next after the first in position in space or time or degree or magnitude
   second  2nd  2d 
   
2. a part or voice or instrument or orchestra section lower in pitch than or subordinate to the first
   "second flute"; "the second violins"
   second 
   

1. a 60th part of a minute of arc
   "the treasure is 2 minutes and 45 seconds south of here"
   second  arcsecond 
   
2. an indefinitely short time
   "wait just a moment"; "in a mo"; "it only takes a minute"; "in just a bit"
   moment  mo  minute  second  bit 
   
3. a speech seconding a motion
   "do I hear a second?"
   second  secondment  endorsement  indorsement 
   
4. a particular point in time
   "the moment he arrived the party began"
   moment  minute  second  instant 
   
5. merchandise that has imperfections; usually sold at a reduced price without the brand name
   irregular  second 
   
6. 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
   second  sec  s 
   
7. the fielding position of the player on a baseball team who is stationed near the second of the bases in the infield
   second base  second 
   
8. the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle
   "he had to shift down into second to make the hill"
   second gear  second 
   
9. the official attendant of a contestant in a duel or boxing match
   second 
   
10. following the first in an ordering or series
    "he came in a close second"
    second 
    

1. give support or one's approval to
   "I'll second that motion"; "I can't back this plan"; "endorse a new project"
   second  back  endorse  indorse 
   
2. transfer an employee to a different, temporary assignment
   "The officer was seconded for duty overseas"
   second 
   

1. in the second place
   "second, we must consider the economy"
   second  secondly  second  secondly