[ bag-uh–tel ] noun

1. A short and light musical composition, typically for the piano.
2. Something of little value or importance; a trifle:“A mere bagatelle,” she murmured in response to my admiration of her ring.
3. A game played on a board having holes at one end into which balls are to be struck with a cue.
4. Pinball.

Source: Dictionary.com https://www.dictionary.com/browse/bagatelle