Scrabble Dictionary

Check if your word is playable in Scrabble.

Yes, tonner is playable

...and is worth 8 points.

Found in the following dictionaries

Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Tonner" Definition

noun

A vessel considered with reference to her tonnage: used in composition: as, a ten-tonner; a thousand- tonner.
An object (as a ship) having a specified .