From WordNet (r) 3.0 (2006):
chit-chat
n 1: light informal conversation for social occasions [syn:
chitchat, chit-chat, chit chat, small talk, gab,
gabfest, gossip, tittle-tattle, chin wag, chin-
wag, chin wagging, chin-wagging, causerie]
v 1: talk socially without exchanging too much information; "the
men were sitting in the cafe and shooting the breeze" [syn:
chew the fat, shoot the breeze, chat, confabulate,
confab, chitchat, chit-chat, chatter, chaffer,
natter, gossip, jaw, claver, visit]