an entrance that can be closed by a gate
"The old stone gateway at the estate's perimeter was locked tight to keep out stray dogs."
An entrance capable of being blocked by use of a gate.
"The old stone gateway at the farm can be easily blocked if we close the heavy iron gate during winter."
In plain English: A gateway is an entrance or starting point that leads you to something else.
"The old iron gate serves as the gateway to the historic castle grounds."
Usage: The everyday noun "gateway" refers to an entrance or passageway that serves as a starting point for entering a larger area or system, often metaphorically describing the initial step toward something new. It functions best when emphasizing access rather than the physical presence of a movable gate.
To make available via a gateway, or access point.
"The new software update acts as a secure gateway that makes all your personal files instantly available to authorized team members without compromising privacy."
In plain English: To act as a gateway means to serve as an entry point that leads someone into something else.
"The new park serves as a gateway to the city for many visitors."
Usage: Use "gateway" as a verb to describe making a service or feature accessible through a specific entry point, such as when a company allows users to sign up for premium tools via their existing free account. It implies creating a bridge that lets people enter a new system without needing separate credentials.
The word gateway is formed by combining the words gate and way to describe a passageway through an entrance. It entered English as a straightforward compound of these two existing terms without any shift in meaning.