Kedar

dark-skinned, the second son of Ishmael (Gen 25:13).

It is the name for the nomadic tribes of Arabs, the Bedouins generally (Isa 21:16; 42:11; 60:7; Jer 2:10; Ezek 27:21), who dwelt in the north-west of Arabia. They lived in black hair-tents (Cant 1:5). To "dwell in the tents of Kedar" was to be cut off from the worship of the true God (Ps 120:5). The Kedarites suffered at the hands of Nebuchadnezzar (Jer 49:28; 49:29). 

EBD - Easton's Bible Dictionary