oarlock, rowlock, thole, tholepin, peg, pin - a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing

rowing boat - a rowboat

small boat - a boat that is small

cross thwart, thwart - a crosspiece spreading the gunnels of a boat; used as a seat in a rowboat

wherry - light rowboat for use in racing or for transporting goods and passengers in inland waters and harbors