The Collaborative International Dictionary of English v.0.48:
Sculler \Scull"er\, n. 1. A boat rowed by one man with two sculls, or short oars. [R.] --Dryden. [1913 Webster] 2. One who sculls. [1913 Webster]WordNet (r) 3.0 (2006):
sculler n 1: someone who sculls (moves a long oar pivoted on the back of the boat to propel the boat forward)