רביעייה

Noun

 * 1) foursome: a group of four people or things.
 * 2) quadruplet: a group of four babies born from the same mother during the same birth.
 * : A group of four singers or players preforming together.
 * 1)  A musical composition written to be played on four instruments or by four singers.
 * 2)  four of a kind