Noah Webster's Dictionary (n.) A transverse bar or piece, as a bar across a door, or as the iron bar or stock which passes through the shank of an anchor to insure its turning fluke down.

Multi-Version Concordance Crossbar (2 Occurrences) Exodus 26:28 The middle bar in the midst of the boards shall pass through from end to end. (See NIV) Exodus 36:33 He made the middle bar to pass through in the midst of the boards from the one end to the other. (See NIV)