Definitions for "Top plate"
The structural member of a wall framing located on the top of the joist. The top plate may be single or double with members.
The horizontal member at the top of a framed wall
horizontal member at the top of the studs of a frame wall or partition
Keywords:  anvil, see
See Anvil.
Keywords:  balusters, rail, cap, posts, attached
attached to the posts and the Top Rail to support the Top Rail and Balusters.* (Also known as Top Cap)