Next after the first in order, place, time, rank, value, quality, etc.: an ordinal numeral: as, the second day of the month; the second volume of a book; the second auditor of the treasury; the second table of the law.Secondary; not primary; subordinate; in music, lower in pitch, or rendering a part lower in pitch: as, second fiddle; second soprano.Other; another: as, a second Daniel; his second self.Favorable; helpful; aiding or disposed to aid.In mathematics, noting a function derived from the performance of the same operation twice in succession: thus, the second difference is the difference of the difference; so second differentials, derivatives, differential coefficients, etc.In the two-handed sword, or spadone, a pair of hooks or projections slightly curved toward the point. forged with the blade itself, and separating the heel from the sharpened part of the blade. See spadone.In rapiers of the sixteenth and seventeenth centuries, the outer defense beyond the Cross-guard, formed of a ring surrounding the blade, a cross, pair of shells, or the like.n. The one next after the first in order, place, time, rank, value, quality, or importance; that one of any two considered relatively which follows or comes immediately after the other.n. In music:n. A tone on the next or second diatonic degree above or below a given tone; the next tone in a diatonic series.n. The interval between any tone and a tone on the next degree above or below.n. The harmonic combination of two tones at the interval thus described.n. In a scale, the second tone from the bottom: solmizated re.n. A second voice or instrument—that is, one whose part is subordinate to or lower than another of the same kind; specifically, a second violin or second soprano; popularly, an alto.n. Same as secondo.n. pl, That which is of second grade or quality; hence, any inferior or baser matter.n. Specificallyn. A coarse kind of fiour, or the bread made from it.n. Acetic acid made from acetate of lime.n. In base-ball, same as second base. See baseball.n. Another; another person; an inferior.n. One who assists and supports another; specifically, one who attends a principal in a duel or a pugilistic encounter, to advise or aid him, and see that all proceedings between the combatants are fair, and in accordance with the rules laid down for the duel or the prizering.n. Aid; help; assistance.To follow up; supplement.To support; aid; forward; promote; back, or back up; specifically, to assist in a duel.In music, to sing second to.In legislative and deliberative bodies, public meetings, etc., formally to express approval and support of (a motion, amendment, or proposal), as a preliminary to further discussion or to formal adoption.In the British Royal Artillery and Royal Engineers, to put into temporary retirement, as an officer when he accepts civil employment under the crown.n. The sixtieth part of a minute.