Tau (?), n. [Gr. tay^ the letter τ (English T).] (Zoöl.)
The common American toadfish; -- so called from a marking resembling the Greek letter tau (τ).
Tau cross. See Illust. 6, of Cross.
© Webster 1913
Tau (tou), n. [Gr. tay^.]
The nineteenth letter (Τ, τ) of the Greek alphabet, equivalent to English t.
© Webster 1913