alley
n. countable B1 Intermediate US //ˈæɫi// UK //ˈæli// al·ley
n. a narrow path or small street between or behind buildings. You often find them in older parts of a city where cars cannot easily go.
n. a narrow passageway between or behind buildings, typically restricted to pedestrian traffic or service access.
The cat ran down the dark alley behind the restaurant.
The delivery driver parked on the main road because his truck was too wide for the narrow alley.
Urban planners are transforming the city's neglected alleys into vibrant pedestrian corridors filled with local art and small garden spaces.
Usage
Often used in the idiom 'right up your alley' to describe something that perfectly suits your interests or skills.