We weren't using the fireplace so we decided to brick it in.The windows of the local army office have been bricked up, I notice.
phrasebrick in brick up/in sth • brick sth up/in to put a wall of bricks in the space where a window, door etc is, so that it cannot be used any more: The house had been empty for years and all the windows had been bricked up.Its previous owners had bricked in the old fireplace and put a gas heater there instead.
brick in
To surround or hem in (something) with bricks. We decided to brick in our back patio to give us a bit more privacy from our neighbors.