[1] : The Collaborative International Dictionary of English v.0.48

saturday \sat"urday\ ?; 48, n. oe. saterday, as. saeterdaeg,
   saeterndaeg, saeternesdaeg, literally, saturn's day, fr. l.
   saturnus saturn + as. daeg day; cf. l. dies saturni.
   the seventh or last day of the week; the day following friday
   and preceding sunday.
   1913 webster

[2] : WordNet (r) 2.0

saturday
     n : the seventh and last day of the week; observed as the
         sabbath by jews and some christians syn: sabbatum, sat
see also:
sabbatum sat 

Saturday >> S Words
Saturday, definition of term: Saturday
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