noun
1. : the main entrance to a dwelling or apartment having more than one entrance : a doorway fronting on or giving direct access to a street or road
2.
a. : a place or area affording the main or best approach or access (as to a country)
the war would then be brought directly to the front door of the Americas — Emil Lengyel
b. : an open direct forthright approach or a legal approach toward gaining some object
should do it directly and openly, through the front door — Yale Review