"narrow entry" is a perfectly accurate and usable phrase in written English.
You can use it to describe an entry or passageway that is physically narrow in size, like a hallway, doorway, or alleyway. For example, "We had to squeeze through the narrow entry to get to our seats."
Two steps to a narrow entry.
Huge fireplaces and narrow entry porch.
WHEELCHAIR ACCESS: Narrow entry and steps; restrooms very small.
Thousands of their fans were grouped all around, in the bars, or the narrow entry ways into the ground.
In the swank Lapa neighborhood, the restaurant has two small, spare dining rooms beyond a narrow entry crammed with cookbooks, olive oils and oversized wine bottles.
A few days later, loitering around the gates of the Harouni estate again, Rezak decided to go in, stepping through a narrow entry set into the wall.
WHEELCHAIR ACCESS -- Several steps to a narrow entry.
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"It would obstruct the most iconic view of the structure," the organization added, "and it would adversely alter the experience of entering the building," in particular the "celebrated sequence from open exterior space through a narrowed entry area into an expansive rotunda".
When, as predicted, the storm surge showed signs that it would begin to inundate the shorelines of lower Manhattan, Brooklyn, and Queens, the emergency system would have kicked in: Across the Verrazano Narrows entry to New York Harbor, across the upper East River, across the entrance to Jamaica Bay, the floodgates would have begun closing.
Its position commanding the narrow lowland entry into England from the northwest gave it strategic importance.
