Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Daily lifestaplersta‧pler /ˈsteɪplə $ -ər/ noun [countable] Da tool used for putting staples into paperFrom Longman Business Dictionarystaplersta‧pler /ˈsteɪplə-ər/ noun [countable]OFFICE a tool used for putting staples into sheets of paper ldoceonline.com