(dated) To court; to make romantic advances. / To flatter.

Alternative spelling of woohoo

(derogatory) A proponent of pseudoscientific ideas or practices.

plural of woo-monger

(informal) The sound of a siren.

present participle of pitch woo

(historical) Part of the 16th-century wars between Scotland and England, during which an attempt was made to force Scotland to agree to a marriage alliance between Mary, Queen of Scots, and the English heir apparent Edward, son of King Henry VIII.