Source : Webster's Revised Unabridged Dictionary (1913)

Preconcert \Pre`con*cert"\, v. t. [imp. & p. p. {Preconcerted};
   p. pr. & vb. n. {Preconcerting}.]
   To concert or arrange beforehand; to settle by previous
   agreement.

Preconcert \Pre*con"cert\, n.
   Something concerted or arranged beforehand; a previous
   agreement.