Strong's #3068: louo (pronounced loo'-o)
 a primary verb; to bathe (the whole person; whereas 3538 means to wet a part only, and 4150 to wash, cleanse garments exclusively):--wash.
Thayer's Greek Lexicon:
 ́ 
 
  louō 
 
 1) to bathe, wash
 
 1a) of a dead person
 1b) washing to cleanse blood out of wounds
 
  Part of Speech: verb
Relation: a root verb
  Citing in TDNT: 4:295, 538
 
Usage:
This word is used 6 times:
John 13:10: "Jesus saith to him,  He that is washed needeth not save"
Acts 9:37: "was sick, and died: whom when  they had washed, they laid her in an upper chamber."
Acts 16:33: "hour of the night,  and washed their stripes; and was baptized,"
Hebrews 10:22: "conscience, and our bodies  washed with pure water."
2 Peter 2:22: "is turned to his own vomit again; and the sow  that was washed to"
Revelation 1:5: "Unto him that loved us, and  washed us from our sins"