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

slide rule \slide" rule`\, n.
   a thin, flat calculating device consisting of a fixed outer
   piece and a movable middle piece. both pieces are graduated
   in such a way as, by a logarithmic scale that
   multiplication, division, and other mathematical functions of
   an input variable may be rapidly determined by movement of
   the middle pieces to a location on one scale corresponding to
   the input value, and reading off the result on another scale.
   a movable window with a hairline assists in alignment of the
   scales. this device has been largely superseded by the
   electronic calculator, which has a greater precision than the
   slide rule. also called colloquially slipstick.
   pjc
see also:
slipstick 

[2] : WordNet (r) 2.0

slipstick
     n : analog computer consisting of a handheld instrument used for
         rapid calculations; have been replaced by pocket
         calculators syn: slide rule
see also:
slide rule 

Slipstick >> S Words
Slipstick, definition of term: Slipstick
slipstick_pag1.html