'Striking' in the Bible

Lamech said to his wives,“Adah and Zillah,Hear my voice;You wives of Lamech,Listen to what I say;For I have killed a man [merely] for wounding me,And a boy [only] for striking (bruising) me.

He went out the next day and saw two Hebrew men fighting with each other; and he said to the aggressor, “Why are you striking your friend?”

Then the prophet found another man and said, “Please strike me.” So the man struck him hard, wounding him.