'Tenons' in the Bible

Two tenons shall there be in each board, joined one to another: thus shalt thou make for all the boards of the tabernacle.

And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for its two tenons, and two sockets under another board for its two tenons.

Each board had two tenons, joined one to another: thus did he make for all the boards of the tabernacle.

And he made forty sockets of silver under the twenty boards; two sockets under one board for its two tenons, and two sockets under another board for its two tenons.