Definition of slushing:
(n) :
Flavored shaved ice served as a drink (a slushie).
(n) :
Half-melted snow or ice, generally located on the ground.
(n) :
Liquid mud or mire.
(v) :
To smear with slushy liquid or grease.
(v) :
To slosh or splash; to move as, or through, a slushy or liquid substance.
(n) :
The refuse grease and fat collected in cooking, especially on shipboard.