With oinos meaning “wine” and cheo “I pour” in ancient Greek, the oinochoe was at least nominally intended to do exactly that – but the vessel could obviously be used for pouring other kinds of liquids as well. The single handle and the trefoil or beaked spout was used to pour wine and/or other drinks during meals or other activities. It usually comes in a variety of shapes and colors.
-Elaina Kim ‘21, JIAAW Records and Collections Assistant 2017/18
See other examples of oinochoe here: