The phrase “narrow side” is correct and can be used in written English.
You might use it to describe something with a thin, limited profile like, “I saw a narrow side of the mountain when I drove along the winding road.”.
As their moving van maneuvered through a narrow side street, it backed into a tree.
The bedroom is on the narrow side and looks out on an air shaft.
He was standing atop a bar table with Chilean friends on a narrow side street crammed with gyrating bodies.
OUTDOOR SPACE: The house has a narrow side yard with a wood walkway; it's planted with bamboo.
It was palm-size and cone-shaped, with a hand-squeezed pedal attached to the narrow side.
Then I do something you will consider truly strange: I start by cooking the steak on its narrow side.
3.07pm BST 6 min From a lineout, Saints look to go down the narrow side on the left through North.
When Israeli troops responded by firing rifles, the youths ran for cover in the alleys and narrow side streets.
You'll know you've arrived when you spot an inked and pierced crowd on a narrow side street using parked cars as ersatz coasters.
The Reno, on a narrow side alley called Harriet Street, had been condemned several years earlier and was awaiting the final stroke of the wrecking ball.
The tear gas began just as the retreating officers reached the ministry, and at midnight the crowds were still surging forward and retreating back through narrow side streets.
