Easton's Bible Dictionary: M. G. Easton, M.A., D.D.

Threshold

  1. Heb.miphtan, probably a projecting beam at a higher point than the threshold proper (1 Sam. 5:4, 5; Ezek. 9:3, 10:4, 18, 46:2, 47:1); also rendered "door" and "door-post."
  2. 'Asuppim, pl. (Neh. 12:25), rendered correctly "storehouses" in the Revised Version. In 1 Chr. 26:15, 17 the Authorized Version retains the word as a proper name, while in the Revised Version it is translated "storehouses."

Original from The Bible Foundation - bf.org. They claim public domain status for their original text.