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aisle

aisle /ˈajəl/ noun
plural aisles
aisle
/ˈajəl/
noun
plural aisles
Britannica Dictionary definition of AISLE
[count]
: a passage where people walk: such as
: a passage between sections of seats in a church, theater, airplane, etc. see picture at theater
◊ When the people of an audience are laughing a lot, they can be described as rolling in the aisles.
: a passage where people walk through a store, market, etc.

walk down the aisle

informal also go down the aisle
: to get married