noun, noun which may take the genitive case particle 'no'
aisle side; aisle seat
Refers to the side or seat next to the aisle in a vehicle, theater, or similar setting. Often used when specifying seat preferences.
I'd like an aisle seat on the plane.
I booked an aisle seat on the plane.
I reserved an aisle seat.
Which would you like, the window side or the aisle side?
I sat on the aisle side in the movie theater.
窓側 refers to the window side/seat, the opposite of 通路側's aisle side/seat.
Compound of 通路 (つうろ, 'aisle') and 側 (がわ, 'side').