古英語のtunne, 樽, 樽から、原語ゲルマン語*tunno, 樽, 樽から、おそらく最終的にはPIE*teue, 膨らむ, 膨らむから、語源的にはtumid, 塊茎と同じ。
-- That? said Stephen. -- Is that called a funnel? Is it not a tundish? --
-- What is a tundish? --
--That. The ... the funnel. --
--Is that called a tundish in Ireland? -- asked the dean. -- I never heard the word in my life. --
-- It is called a tundish in Lower Drumcondra -- said Stephen, laughing -- where they speak the best English.--
-- A tundish -- said the dean reflectively. -- That is a most interesting word I must look that word up. Upon my word I must. --
His courtesy of manner rang a little false, and Stephen looked at the English convert with the same eyes as the elder brother in the parable may have turned on the prodigal. [Joyce, "Portrait of the Artist as a Young Man"]