Definition of "Premier" :

noun: the person who is head of government (in several countries)

noun: the person who holds the position of head of the government in the United Kingdom

verb: perform a work for the first time

verb: be performed for the first time

"We premiered the opera of the young composer and it was a critical success."

adjective: preceding all others in time

"The premiere showing."

adjective: first in rank or degree

"An architect of premier rank."