The Collaborative International Dictionary of English v.0.48:
Applier \Ap*pli"er\, n. He who, or that which, applies. [1913 Webster]WordNet (r) 3.0 (2006):
applier n 1: a person who requests or seeks something such as assistance or employment or admission [syn: applicant, applier] 2: a device for applying a substance [syn: applicator, applier]