From The Collaborative International Dictionary of English v.0.48 :
Tonne \Tonne\, n. A tun. [Obs.] --Chaucer. [1913 Webster]From The Collaborative International Dictionary of English v.0.48 :
Tonne \Tonne\, n. [F.] A metric ton. [Webster 1913 Suppl.]From WordNet (r) 3.0 (2006) :
tonne n 1: a unit of weight equivalent to 1000 kilograms [syn: metric ton, MT, tonne, t]