Other forms: aisles
An aisle is the walking space between rows — between seats on a plane, between shelves in a shop. You stand up to let the person by the window out into the aisle.
The S is silent: it sounds exactly like I'll. On a plane you book an aisle seat if you want to get out without asking permission; in a supermarket you look for the aisle with the tins, and the numbers hang down from the ceiling. In a church the aisle is the long walk to the altar, which is where walking down the aisle, meaning getting married, comes from. Politics borrowed it too — reaching across the aisle is working with the other party, named after the gap between the benches. Do not mix it with isle, a small island, which sounds the same and means nothing like it.
1nounaisleThe narrow walking space between rows of seats in a plane, train, cinema or church.
“He put his bag under the seat and stretched his legs into the aisle.”
2nounshopOne of the long lanes between the shelves of a supermarket or shop.
“The rice is in the third aisle, next to the pasta.”
Too few real examples of this word to estimate which sense is commonest.
An aisle was a wing. Middle English ele came from Anglo-Norman ele, 'wing', from Latin āla — the side parts of a church spreading out from the middle like a pair of wings. Latin traces it back to axis, which puts aisle in the family of axle and Greek ἄξων. The silent S is an accident: the word drifted towards isle, 'island', and never came back.
Proto-Indo-European
*h₂eḱs-
Latin
āla
Anglo-Norman
ele — wing
Middle English
ele
English, today
aisle
From Middle English ele, from Anglo-Norman ele (“wing”) (Modern French aile), from Latin āla (whence English ala). Further from Latin axis (whence English axis, atelier). Via Proto-Indo-European h₂eḱs- cognate with English axle, Ancient Greek ἄξων (whence English axo-, axon). The modern pronunciation has been influenced by isle, whence the obsolete form isle; the modern spelling reflects further modification of this form after modern aile.
Etymology from Wiktionary, CC BY-SA