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:
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
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"