Strong's #6938: Qedar (pronounced kay-dawr')
 from 6937; dusky (of the skin or the tent); Kedar, a son of Ishmael; also (collectively) Bedouin (as his descendants or representatives):--Kedar.
Brown-Driver-Briggs Hebrew Lexicon:
 
  qêdâr 
 
 Kedar = "dark" 
 1) a son of Ishmael (noun proper masculine)
 2) the descendants of Kedar (noun proper people)
 
  Part of Speech: see above in Definition
Relation: from H6937
Usage:
This word is used 12 times:
Genesis 25:13: "the firstborn of Ishmael, Nebajoth;  and Kedar, and Adbeel, and Mibsam,"
1 Chronicles 1:29: "The firstborn of Ishmael, Nebaioth;  then Kedar, and Adbeel, and Mibsam,"
Psalms 120:5: "that I dwell in the tents  of Kedar!"
Song of Solomon 1:5: "O ye daughters of Jerusalem, as the tents  of Kedar, as the curtains of Solomon."
Isaiah 21:16: "of a hireling, and all the glory  of Kedar shall fail:"
Isaiah 21:17: "of archers, the mighty men of the children  of Kedar, shall be diminished: for the LORD God"
Isaiah 42:11: "and the cities thereof lift up their voice, the villages  that Kedar doth inhabit: let the inhabitants of the rock sing,"
Isaiah 60:7: "All the flocks  of Kedar shall be gathered together unto thee, the rams of Nebaioth shall minister unto thee: they shall come up"
Jeremiah 2:10: "of Chittim, and see; and send  unto Kedar, and consider diligently, and see if there be"
Jeremiah 49:28: " Concerning Kedar, and concerning the kingdoms of Hazor, which Nebuchadnezzar king of Babylon shall smite,"
Jeremiah 49:28: "Arise ye, go up to  Kedar, and spoil the men of the east."
Ezekiel 27:21: "Arabia, and all the princes  of Kedar, they occupied with thee in lambs,"