Occurring every fifteen minutes.

Every fifteen minutes.

(colloquial, idiomatic, chiefly US) A person who watches sports on television, typically American football, who often verbally suggests plays or critiques the players and coaches.

plural of quarter-plate

(photography, historical) A photographic plate measuring 3¼ by 4¼ inches.

plural of quarter-eater

(US, informal, video games) A coin-operated arcade game.

Synonym of pick a fight

One who is quarantined.

plural of quarantinee