Slider /(?)/

Slid·er

Slider

a.
  1. See Slidder. [Obs.]

Slider

n.
  1. One who, or that which, slides; especially, a sliding part of an instrument or machine.
  2. The red-bellied terrapin (Pseudemys rugosa). (Zool.) [Local, U. S. ]
  3. any of several North American freshwater turtles of the genus Chrysemis; some, such as Chrysemis scripta are sold commercially as pets. (Zool.)
  4. a fast pitch that breaks slightly just in front of the batter, in the same direction as a curve ball (i. e. , away from the side from which it was thrown). (Baseball)

Phrases & Compounds
Slider pump
a form of rotary pump.