Applicator

An applicator is a tubular, nozzle or rod-shaped device

for placing decorative details on textiles or furniture etc., see applique
for applying materials with certain properties to a base material, for example powder coating or road markings
for applying cosmetics , e.g. lip gloss , or drugs , see application form
for inserting tampons and the like into body orifices
for introducing probes or drugs into the body
for applying materials with certain properties to a base material, for example sun protection film on a pane of glass

See also:

Wiktionary: apply - explanations of meanings, word origins, synonyms, translations