Concert \Con*cert"\, v. t. [imp. & p. p. Concerted; p. pr. & vb. n. Concerting.]

[F. concerter, It. concertare, conertare, prob. from L. consertus, p. p. of conserere to join together; con- + serere to join together, influenced by concertare to contend; con- + centare to strive; properly, to try to decide; fr. cernere to distinguish. See Series, and cf. Concern.]

1. To plan together; to settle or adjust by conference, agreement, or consultation.

It was concerted to begin the siege in March. --Bp. Burnet.

2. To plan; to devise; to arrange.

A commander had more trouble to concert his defense before the people than to plan . . . the campaign. --Burke.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Concert \Con*cert"\, v. i. To act in harmony or conjunction; to form combined plans.

The ministers of Denmark were appointed to concert with Talbot. --Bp. Burnet

Source: Webster's Revised Unabridged Dictionary (1913)
 

Concert \Con"cert\ (k[o^]n"s[~e]rt), n. [F. concert, It. concerto, conserto, fr. concertare. See Concert, v. t.]

1. Agreement in a design or plan; union formed by mutual communication of opinions and views; accordance in a scheme; harmony; simultaneous action.

All these discontents, how ruinous soever, have arisen from the want of a due communication and concert. --Swift.

2. Musical accordance or harmony; concord.

Let us in concert to the season sing. --Cowper.

3. A musical entertainment in which several voices or instruments take part.

Visit by night your lady's chamber window With some sweet concert. --Shak.

And boding screech owls make the concert full. --Shak.

Concert pitch. See under Pitch.

Source: Webster's Revised Unabridged Dictionary (1913)