pitch woo

Court, make love to, flatter, as in They sat on the porch swing, pitching woo, or He's an excellent salesman, adept at pitching woo. This idiom, which may be obsolescent, uses pitch in the sense of “talk.” [Slang; early 1800s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.