v. i. To act in harmony or conjunction; to form combined plans. [ 1913 Webster ]

The ministers of Denmark were appointed to concert with Talbot. Bp. Burnet [ 1913 Webster ]

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. [ 1913 Webster ]

It was concerted to begin the siege in March. Bp. Burnet. [ 1913 Webster ]

2. To plan; to devise; to arrange. [ 1913 Webster ]

A commander had more trouble to concert his defense before the people than to plan . . . the campaign. Burke. [ 1913 Webster ]

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. [ 1913 Webster ]

All these discontents, how ruinous soever, have arisen from the want of a due communication and concert. Swift. [ 1913 Webster ]

2. Musical accordance or harmony; concord. [ 1913 Webster ]

Let us in concert to the season sing. Cowper. [ 1913 Webster ]

3. A musical entertainment in which several voices or instruments take part. [ 1913 Webster ]

Visit by night your lady's chamber window
With some sweet concert. Shak. [ 1913 Webster ]

And boding screech owls make the concert full. Shak. [ 1913 Webster ]

Concert pitch. See under Pitch. [ 1913 Webster ]

n. [ It., orig p. pr. of concertare to form or perform a concert. See Concert. ] (Mus.) A concert for two or more principal instruments, with orchestral accompaniment. Also adjectively; as, concertante parts. [ 1913 Webster ]

n. [ L. concertatio. ] Strife; contention. [ Obs. ] Bailey. [ 1913 Webster ]

a. [ L. concertativus. ] Contentious; quarrelsome. [ Obs. ] Bailey. [ 1913 Webster ]

a. Mutually contrived or planned; agreed on; as, concerted schemes, signals. [ 1913 Webster ]

Concerted piece (Mus.), a composition in parts for several voices or instrument, as a trio, a quartet, etc. [ 1913 Webster ]

n. [ From It. concerto a concert. ] A small musical instrument on the principle of the accordion. It is a small elastic box, or bellows, having free reeds on the inside, and keys and handles on the outside of each of the two hexagonal heads. [ 1913 Webster ]

n. [ See Concertina. ] (Mus.) A piece for one or more solo instruments with orchestra; -- more concise than the concerto. [ 1913 Webster ]

n. Act of concerting; adjustment. [ R. ] Young. [ 1913 Webster ]