A sculling oar is shorter and has a smaller blade area than the equivalent sweep oar.
For example, a whip is used to indicate a horse and an oar symbolizes a boat.
Row boats or dinghies are oar powered, and generally restricted to protected waters.
British Dictionary definitions for oar
oar
/ɔː/
noun
1.
a long shaft of wood for propelling a boat by rowing, having a broad blade that is dipped into and pulled against the water. Oars were also used for steering certain kinds of ancient sailing boats
to row or propel with or as if with oars: the two men were oaring their way across the lake
Derived Forms
oarless, adjective oarlike, adjective
Word Origin
Old English ār, of Germanic origin; related to Old Norse ār
Word Origin and History for oar
n.
Old English ar "oar," from Proto-Germanic *airo (cf. Old Norse ar, Danish aare, Swedish åra), of unknown origin; perhaps related to Latin remus "oar," Greek eretes "rower," eretmos "oar."