כָּפַל

And thou shalt couple five curtains by themselves, and six curtains by themselves, and shalt double the sixth curtain in the forefront of the tabernacle.

Foursquare it shall be being doubled; a span shall be the length thereof, and a span shall be the breadth thereof.

It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being doubled.

Thou therefore, son of man, prophesy, and smite thine hands together, and let the sword be doubled the third time, the sword of the slain: it is the sword of the great men that are slain, which entereth into their privy chambers.