From Longman Dictionary of Contemporary Englishapplicatorap‧pli‧ca‧tor /ˈæplɪkeɪtə $ -ər/ noun [countable] a special brush or tool used to spread a cream, liquid, medicine etc onto a surface
Examples from the Corpus
applicator• You just tape her by the wings to an applicator stick using Scotch tape.• A specially designed applicator was supplied, which minimised damage to local tissue.• There is a mirror and packs of hygienic, disposable applicators, too.• Products can be marketed in a container which plugs directly into the applicator. 