An aisle is a walkway between rows of seats or shelves. When you walk down the aisle of an airplane to find your seat, you're moving through that narrow passage between the rows. In a grocery store, each aisle runs between tall shelves stocked with different products: the cereal aisle, the snack aisle, the cleaning supplies aisle.

In a wedding, the bride typically walks down the center aisle toward the altar, while guests sit in rows on either side.

Theater aisles let people reach their seats and provide emergency exits. Library aisles help you navigate between bookshelves. Stadium aisles guide fans to their sections.

When something makes you laugh uncontrollably, you might say it had you rolling in the aisles, an expression from live theater, where audiences found performances so funny they could barely stay in their seats. The phrase captures that helpless, delighted laughter that comedy sometimes produces.