Merriam-Webster's Collegiate® Dictionary, 11th Edition
SHUFFLE
I. verb (shuffled; shuffling)
Etymology: perhaps irregular from 1shove
Date: 1570
transitive verb to mix in a mass confusedly ; jumble , to put or thrust aside or under cover ,
3. to rearrange (as playing cards, dominoes, or tiles) to produce a random order, to move about, back and forth, or from one place to another ; shift ,
4. to move (as the feet) by sliding along or back and forth without lifting, to perform (as a dance) with a dragging, sliding step, intransitive verb to work into or out of trickily , to act or speak in a shifty or evasive manner,
3. to move or walk in a sliding dragging manner without lifting the feet, to dance in a lazy nonchalant manner with sliding and tapping motions of the feet, to execute in a perfunctory or clumsy manner, to mix playing cards or counters by shuffling, shuffler noun
II. noun
Date: 1628
an evasion of the issue ; equivocation,
2. an act of shuffling (as of cards), a right or turn to shuffle , a confusing jumble (as of papers or events) ,
3. a dragging sliding movement, a dance characterized by such a step, c. a rhythm where each beat of the measure is played as a triplet with the first and second parts of the triplet tied and the third part accented, music played in a shuffle rhythm