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