Source : Webster's Revised Unabridged Dictionary (1913)

Premiere \Pre*mi[`e]re"\, a. fem. [F., prop. fem. of premier
   first. See {Premier}, a.]
   First; chief; as, a premi[`e]re danseuse. -- n. fem.; pl.
   {-mi[`e]res} (F. pre*my[^a]r").
   (a) The leading woman of a group, esp. in a theatrical cast.
   (b) A first performance, as of a play; a first night.

Source : WordNet®

premiere
     adj : preceding all others in time; "the premiere showing" [syn: {premier}]
     n : the first public performance of a play or movie
     v 1: be performed for the first time; "We premiered the opera of
          the young composer and it was a critical success" [syn:
          {premier}]
     2: perform a work for the first time [syn: {premier}]