The Collaborative International Dictionary
Flotson
Flotsam \Flot"sam\, Flotson \Flot"son\, n. [F. flotter to float.
See FFlotilla, and cf. Jetsam.] (Law)
Goods lost by shipwreck, and floating on the sea; -- in
distinction from jetsam or jetson.
--Blackstone.
Wiktionary
flotson
n. (dated form of flotsam English)