'To bill and coo' definitions:

Definition of 'To bill and coo'

From: GCIDE
  • Bill \Bill\, v. i. [imp. & p. p. Billed; p. pr. & vb. n. Billing.]
  • 1. To strike; to peck. [Obs.] [1913 Webster]
  • 2. To join bills, as doves; to caress in fondness. "As pigeons bill." --Shak. [1913 Webster]
  • To bill and coo, to interchange caresses; -- said of doves; also of demonstrative lovers. --Thackeray. [1913 Webster]