time killer

American  

noun

1. a person with free time to spend.

2. an activity that helps the time to go by agreeably or tolerably; pastime.

---

Etymology

Origin of time killer

First recorded in 1745–55

Example Sentences

"In one of the first encounters researchers had with a pod of these oceanic killer whales, they were observed taking on a herd of nine adult female sperm whales, eventually making off with one. It is the first time killer whales have been reported to attack sperm whales on the west coast," said McInnes.

From Science Daily

In time, Killer Mike’s arrest will likely be remembered as yet another ungainly pressure point on the Grammys’ often toxic relationship with hip-hop — last year’s multi-artist 50th anniversary extravaganza notwithstanding — along with the protests Jay-Z mentioned in his speech, and the outspoken rap stars who have effectively declared that the Grammys aren’t worth their time.

From New York Times

He called it “certainly rare to see all at the same time — killer tornadoes, hurricane-force winds and softball-sized hail.”

From Seattle Times

There will be plenty of The Cars in this two-hour time killer, hence the music admirer's prayer that the band's body of work emerges unscathed.

From Salon

YouTube is a classic time killer, but it has struggled with some of the same issues around misinformation and its impact on children as Facebook.

From Washington Post