butterfly door (a door mounted on a central pivot point which opens both inwards and outwards at the same time from the two halves) / a door which opens upwards, such as gullwing doors and scissor doors

plural of porte-mine

flagbearer

plural of porte-drapeau

French window, French door

Groom of the Stool

a screen door (a door designed to let air flow but keep out insects, using an insect screen)

a secondary door placed inside or outside of the primary door / a storm door (an exterior door placed outside the primary door to improve weatherproofing)

front door

departure gate, boarding gate