
1) Architectural element 2) Light switch surrounder
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https://www.crosswordclues.com/clue/wall-plate

A plate or wall plate is a horizontal, structural, load-bearing member in wooden building framing. ==Timber framing== A plate in timber framing is `A piece of Timber upon which some considerable weight is framed...Hence Ground-Plate...Window-plate [obsolete]...` etc. Also called a wall plate, raising plate, or top plate, An exception to the use .....
Found on
http://en.wikipedia.org/wiki/Wall_plate

beam laid along the lateral wall tops to receive the feet of the rafters
Found on
http://www.castles-of-britain.com/glossary.htm

Horizontal roof-timber on wall-top.
Found on
http://www.castlesontheweb.com/glossary.html

Horizontal roof-timber on wall-top.
Found on
http://www.encyclo.co.uk/local/20018

a timber laid along the top of a wall, rafter ends and studs and posts from below may be joined to it. See roof.
Found on
http://www.encyclo.co.uk/local/20935

A beam, usually of timber, resting on a wallhead, on which the lower ends of the roof-trusses rest Related Words: Truss
Found on
http://www.encyclo.co.uk/local/20938

A horizontal member anchored to a masonry wall to which other structural elements may be attached. Also called head plate.
Found on
http://www.encyclo.co.uk/local/22187

A horizontal timber along the top of a wall ready to take either roof timbers or floor joists.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

In architecture a wall plate is a piece of timber placed horizontally upon a wall used for supporting posts, joists, and the like.
Found on
http://www.probertencyclopaedia.com/browse/TW.HTM

A horizontal member anchored to a masonry wall to which other structural elements may be attached. Also called head plate.
Found on
http://www.selectstone.com/architectural-resources/stone-glossary/

[
n] - plate (a timber along the top of a wall) to support the ends of joists, etc., and distribute the load
Found on
http://www.webdictionary.co.uk/definition.php?query=wall%20plate

Horizontal timber at top of wall on which roof timbers, rafters or joists rest.
Found on
https://www.encyclo.co.uk/local/20694
noun plate (a timber along the top of a wall) to support the ends of joists, etc., and distribute the load
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.