Bairam

Webster's Dictionary

(1): (n.) Either of two Mohammedan festivals, of which one (the Lesser Bairam) is held at the close of the fast called Ramadan, and the other (the Greater Bairam) seventy days after the fast.

(2): (n.) The name of two Mohammedan festivals, of which one is held at the close of the fast called Ramadan, and the other seventy days after the fast.

The Nuttall Encyclopedia

A Mohammedan festival of three days at the conclusion of the Ramadan, followed by another of four days, seventy days later, called the Second Bairam, in commemoration of the offering up of Isaac, and accompanied with sacrifices.