She 'stamped' the cigarette 'out'. [=she put out the cigarette by stepping on it]
The fans cheered and 'stamped' [='stomped'] their feet as the team took the lead.
He 'stamped' the date on the letter. = He 'stamped' the letter with the date.
(..) when Magnuson was electrocuted. Take a look at this. On the left is Magnuson, and on the right is the killer. But look at the time stamp. He was killed two hours earlier than we thought. Wait. But your analysis of the hard drive showed it was fried at a.m. (..)2014 TvShow: Bones Title: The Master in the Slop Season: 9 Episode 14