Definition of second :
1. Aid; assistance; help.
2. An article of merchandise of a grade inferior to the best; esp., a coarse or inferior kind of flour.
3. Being of the same kind as another that has preceded; another, like a protype; as, a second Cato; a second Troy; a second deluge.
4. Immediately following the first; next to the first in order of place or time; hence, occuring again; another; other.
5. In the duodecimal system of mensuration, the twelfth part of an inch or prime; a line. See Inch, and Prime, n., 8.
6. Next to the first in value, power, excellence, dignity, or rank; secondary; subordinate; inferior.
7. One who follows or attends another for his support and aid; a backer; an assistant; specifically, one who acts as another's aid in a duel.
8. One who, or that which, follows, or comes after; one next and inferior in place, time, rank, importance, excellence, or power.
9. Specifically, to support, as a motion or proposal, by adding one's voice to that of the mover or proposer.
10. The interval between any tone and the tone which is represented on the degree of the staff next above it.
11. The second part in a concerted piece; - often popularly applied to the alto.
12. The sixtieth part of a minute of time or of a minute of space, that is, the second regular subdivision of the degree; as, sound moves about 1, 140 English feet in a second; five minutes and ten seconds north of this place.
13. To follow in the next place; to succeed; to alternate.
14. To follow or attend for the purpose of assisting; to support; to back; to act as the second of; to assist; to forward; to encourage.
insurgent, abet, blurb, arcsecond, stand by, stake, randomness, tick, gage, back, endorsement, act, second base, punt, morsel, irregular, atomic number 42, minute of arc, assist, forward, siemens, molybdenum, flash, back up, help, flake, routine, second gear, unimportant, snatch, atomic number 16, heartbeat, sustain, game, certify, cooperate, mo, secondment, chip, trice, split second, arcminute, 2d, warrant, endorse, present moment, scrap, intermediate, another, piece, befriend, following, turn, instant, next to the first, guerilla, entropy, moment, south, bit, uphold, reciprocal ohm, guerrilla, jiff, big, indorse, mho, spot, support, bet on, next, wink, twinkle, blink of an eye, aid, plunk for, S, sulphur, twinkling, indorsement, due south, jiffy, 2nd, imprimatur, here and now, next in rank, encourage, ordinal, sanction, plump for, countenance, import, secant, foster, succor, sulfur, crack, sec, bite, min, next in order, southward, number, other, fleck, consequence, secondly
assistant (part of speech: noun)
attorney, partner, abettor, helpmate, henchman, aide-de-camp, patsy, hireling, backer, associate, acolyte, underling, follower, extra, ancillary, accessory, benefactor, auxiliary, attendant, accomplice, helper, adjunct, agent, functionary, servant, deputy, aide, junior, aider, stooge, menial, minion, subordinate, laborer, flunky, assistant, chaperone, lieutenant, proxy, employee
point of time (part of speech: noun)
deputy (part of speech: noun)
dummy, alternate, envoy, spokeswoman, spokesman, representative, assignee, nominee, stand-in, arm, appointee, emissary, surrogate, double, token, ghost, substitute, understudy, backup, delegate, figurehead, mouthpiece
double (part of speech: adjective)
accompany (part of speech: verb)
substitute (part of speech: verb)
agent (part of speech: noun)
measure (part of speech: noun)
fathom, league, millimeter, micron, step, ell, cubit, kilometer, mile, angstrom, rod, furlong, knot, foot, centimeter, measure, decameter, mil, inch, decimeter, hectometer, yard, criterion, block, meter
duplication (part of speech: noun)
inferior (part of speech: noun)
born loser, subaltern, lesser, flop, failure, second banana, also-ran, subject, reject, below, loser, has-been, lemon, dependent, underdog, turkey, nonstarter, underachiever, inferior, under, subservient, second fiddle, dud
accompaniment (part of speech: noun)