Verb
finish or complete, as with some decisive action
Source: WordNetBe sure to take the lens cap off before photographing. Elliott Erwitt
The Madden NFL franchise holds a special place in popular culture and the cover is a coveted position for players all over the league. I'm honored to be the first cover athlete chosen by Madden NFL fans and it's a great way to cap off an amazing year for the Saints and the city of New Orleans. Drew Brees
I often eat Skippy's Super Chunk peanut butter out of the jar with a spoon. I don't shamefully sneak it in the dark of night when everyone is in bed. I just twist that cap off and go to town right out in the open. Willie Geist
he capped off the meeting with a radical proposal Source: Internet