NOUN (1)

1. partially melted snow (or a mixture of rain and snow);


VERB (1)

1. precipitate as a mixture of rain and snow;
- Example: "If the temperature rises above freezing, it will probably sleet"

The Collaborative International Dictionary of English v.0.48:

Sleet \Sleet\, n. [OE. sleet; akin to MHG. sl?z, sl?ze
   hailstone, G. schlosse; of uncertain origin.]
   Hail or snow, mingled with rain, usually falling, or driven
   by the wind, in fine particles.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sleet \Sleet\, v. i. [imp. & p. p. Sleeted; p. pr. & vb. n.
   Sleeting.]
   To snow or hail with a mixture of rain.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sleet \Sleet\, n. (Gun.)
   The part of a mortar extending from the chamber to the
   trunnions.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sleet
    n 1: partially melted snow (or a mixture of rain and snow)
    v 1: precipitate as a mixture of rain and snow; "If the
         temperature rises above freezing, it will probably sleet"