Source : Webster's Revised Unabridged Dictionary (1913)

Tuesday \Tues"day\ (t[=u]z"d[asl]; 48), n. [OE. Tewesday, AS.
   Tiwes d[ae]g the day of Tiw the god of war; akin to OHG. Zio,
   Icel. T[=y]r, L. Jupiter, Gr. Zey`s;, cf. OHG. Ziostac
   Tuesday, G. Dienstag, Icel. T[=y]sdagr. [root]244. See
   {Deity}, {Day}, and cf. {Jovial}.]
   The third day of the week, following Monday and preceding
   Wednesday.

Source : WordNet®

Tuesday
     n : the third day of the week; the second working day [syn: {Tues}]