to same as belch; as, In China it is polite to burp at the table. [WordNet 1.5]
burp, v. t.
to cause to belch; -- used especially of actions parents take to relieve stomach gas in infants; as, mother fed and burped the baby, and put her to bed. [PJC]
burp, n.
a reflex that expels wind noisily from the stomach through the mouth. [WordNet 1.5]