I liked the sideways shift of this one.
The original Latin root for aisle meant wings.
On ships of the day the banks of oars looked like the wings of the ship as it "flew" over the water. The next shift is to the rows of columns along the outside of Roman temples and other buildings which reminded people of the oars and were also refered to as aisles/wings.
Then the early Christian churches of Rome were built in a similar style but with the aisles moved inside. Ttrick question - how many brides have walked down the aisle - None, properly speaking in churches the aisles are at the sides not down the middle of the nave.(cognate with ship)

And now theatres have both aisles for the audience and wings for the stage.