The Collaborative International Dictionary of English v.0.48:
Accord \Ac*cord"\, n. [OE. acord, accord, OF. acort, acorde, F.
accord, fr. OF. acorder, F. accorder. See Accord, v. t.]
1. Agreement or concurrence of opinion, will, or action;
harmony of mind; consent; assent.
A mediator of an accord and peace between them.
These all continued with one accord in prayer.
--Acts i. 14.
2. Harmony of sounds; agreement in pitch and tone; concord;
as, the accord of tones.
Those sweet accords are even the angels' lays. --Sir
3. Agreement, harmony, or just correspondence of things; as,
the accord of light and shade in painting.
4. Voluntary or spontaneous motion or impulse to act; --
preceded by own; as, of one's own accord.
That which groweth of its own accord of thy harvest
thou shalt not reap. --Lev. xxv. 5.
Of his own accord he went unto you. --2 Cor. vii.
5. (Law) An agreement between parties in controversy, by
which satisfaction for an injury is stipulated, and which,
when executed, bars a suit. --Blackstone.
With one accord, with unanimity.
They rushed with one accord into the theater. --Acts