What is the meaning of Keye?

A key; a tool for opening locks.

In various extended senses:

  1. A protrusion at the apex of a vault.
  2. A musical sound; a note or tone.
  3. A rudder (device for steering a ship)

A protrusion at the apex of a vault.

A musical sound; a note or tone.

A rudder (device for steering a ship)

In various figurative senses:

  1. Control, safety, or that which ensures it.
  2. A requirement or prerequisite.
  3. An explication; explanatory material.

Control, safety, or that which ensures it.

A requirement or prerequisite.

An explication; explanatory material.

quay

house

Source: wiktionary.org