资料来源 : Webster's Revised Unabridged Dictionary (1913)

Applier \Ap*pli"er\, n.
   He who, or that which, applies.

资料来源 : WordNet®

applier
     n 1: a person who requests or seeks something such as assistance
          or employment or admission [syn: {applicant}]
     2: a device for applying a substance [syn: {applicator}]