Strong's #2572: chamishshiym (pronounced kham-ish-sheem')
 multiple of 2568; fifty:--fifty.
Brown-Driver-Briggs Hebrew Lexicon:
 ּׁ 
  chămishshı̂ym 
 
 1) fifty
 
 1a) fifty (cardinal number)
 1b) a multiple of fifty (with other numbers)
 1c) fiftieth (ordinal number)
 
  Part of Speech: noun plural
Relation: multiple of H2568
  Same Word by TWOT Number: 686c
Usage:
This word is used 163 times:
Ezekiel 40:25: "thereof round about, like those windows: the length  was fifty cubits, and the breadth"
Ezekiel 40:29: "and there were windows in it and in the porches thereof round about:  it was fifty long, and five"
Ezekiel 40:33: "and there were windows therein and in the porches thereof round about:  it was fifty long, and five"
Ezekiel 40:36: "thereof, and the windows to it round about: the length  was fifty cubits, and the breadth"
Ezekiel 42:2: "cubits was the north door, and the breadth  was fifty cubits."
Ezekiel 42:7: "of the chambers, the length  thereof was fifty cubits."
Ezekiel 42:8: "that were in the utter court  was fifty cubits: and, lo,"
Ezekiel 45:2: "in length, with five hundred in breadth, square  and fifty cubits round about for the suburbs"
Ezekiel 48:17: "shall be toward the north two hundred  and fifty, and toward the south two hundred and fifty,"
Ezekiel 48:17: "and fifty, and toward the south two hundred  and fifty, two hundred and fifty, and toward the west"
Ezekiel 48:17: "and fifty, two hundred  and fifty, and toward the west two hundred and fifty."
Ezekiel 48:17: "and fifty, and toward the west two hundred  and fifty."
Haggai 2:16: "when one came to for to draw out  fifty vessels out of the press, there were but twenty."