Pronunciation: s ā nt- ' lo ̇ r- ə n(t)s, s ə nt-, - ' lär-
Function: geographical name
river 760 mi (1223 km ) E Canada in Ont. & Que. bordering on the U.S. in N.Y., flowing from Lake Ontario NE into the Atlantic, & forming at its mouth a wide bay (the Gulf of Saint Lawrence )