noun Ton·na \ˈtänə\

Definition of Tonna

  1. :  a genus of large marine gastropods (family Tonnidae) lacking varix and operculum and having the body whorl greatly enlarged and the aperture very wide

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Origin and Etymology of tonna

New Latin, from Medieval Latin tunna, tonna barrel, tun — more at tunnel

Seen and Heard

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a trip made at another's expense

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