n. 1. One who, or that which, slips. [ 1913 Webster ]

2. A kind of light shoe, which may be slipped on with ease, and worn in undress; a slipshoe. [ 1913 Webster ]

3. A kind of apron or pinafore for children. [ 1913 Webster ]

4. A kind of brake or shoe for a wagon wheel. [ 1913 Webster ]

5. (Mach.) A piece, usually a plate, applied to a sliding piece, to receive wear and afford a means of adjustment; -- also called shoe, and gib. [ 1913 Webster ]

Slipper animalcule (Zool.), a ciliated infusorian of the genus Paramecium. --
Slipper flower.(Bot.) Slipperwort. --
Slipper limpet, or
Slipper shell (Zool.), a boat shell. [ 1913 Webster ]

a. [ AS. slipur. ] Slippery. [ Obs. ] [ 1913 Webster ]

O! trustless state of earthly things, and slipper hope
Of mortal men. Spenser. [ 1913 Webster ]

a. Wearing slippers. Shak. [ 1913 Webster ]

adv. In a slippery manner. [ 1913 Webster ]

n. The quality of being slippery. [ 1913 Webster ]

n. Slipperiness. [ Obs. ] [ 1913 Webster ]

n. any of several chiefly American wildflowers having an inflated pouchlike lip; difficult or impossible to cultivate in the garden.
Syn. -- lady's slipper, lady's-slipper, lady-slipper. [ WordNet 1.5 ]

n. (Bot.) See Calceolaria. [ 1913 Webster ]

a. [ See Slipper, a. ] 1. Having the quality opposite to adhesiveness; allowing or causing anything to slip or move smoothly, rapidly, and easily upon the surface; smooth; glib; as, oily substances render things slippery. [ 1913 Webster ]

2. Not affording firm ground for confidence; as, a slippery promise. [ 1913 Webster ]

The slippery tops of human state. Cowley. [ 1913 Webster ]

3. Not easily held; liable or apt to slip away. [ 1913 Webster ]

The slippery god will try to loose his hold. Dryden. [ 1913 Webster ]

4. Liable to slip; not standing firm. Shak. [ 1913 Webster ]

5. Unstable; changeable; mutable; uncertain; inconstant; fickle. “The slippery state of kings.” Denham. [ 1913 Webster ]

6. Uncertain in effect. L'Estrange. [ 1913 Webster ]

7. Wanton; unchaste; loose in morals. Shak. [ 1913 Webster ]

Slippery elm. (Bot.) (a) An American tree (Ulmus fulva) with a mucilagenous and slightly aromatic inner bark which is sometimes used medicinally; also, the inner bark itself. (b) A malvaceous shrub (Fremontia Californica); -- so called on the Pacific coast. [ 1913 Webster ]