aisle
n. countable B1 Intermediate US //ˈaɪəɫ// UK //ˈaɪəl// aisle
n. a long, narrow path between rows of seats or shelves. You walk down an aisle in a supermarket, a plane, or a church.
n. a passage between rows of seats, shelves, or other structures. In political contexts, it refers to the physical and metaphorical division between opposing parties in a legislative chamber.
The grocery store aisle is full of cereal boxes.
The senator decided to reach across the aisle to find a compromise with the opposing party.
While the legislative body remained deeply divided on fiscal policy, a small group of moderates began working across the aisle to draft a bipartisan infrastructure bill.
Usage
Often used metaphorically in the phrase 'across the aisle' to describe cooperation between political rivals.