Lag B'Omer is a Jewish holiday celebrated on the 18th day of Iyar, the 33rd day of the Omer, and is a day of celebration for the whole nation of Israel. According to tradition, the students of the great sage Rabbi Akiva, who had been dying in great numbers, stopped dying on this day, and this is why it is a day of celebration, or rejoicing. It is also the day on which Rabi Shimon bar Yochai died, and although not normally an occasion for celebration, tradition has it that upon his death he revealed great wisdom, and so on Lag B'Omer he is also celebrated with people flocking to his grave in the city of Meron, singing and dancing and lighting bonfires. Research Lag B'Omer More information about Lag B'Omer
The LAG-40 is a Spanish long recoil operated automatic grenade launcher. The LAG-40 fires 40 mm high velocity grenades fed from a 24 or 32 round linked-belt which can be fed from either side of the breech, allowing the LAG-40 to be mounted in vehicles, boats and on a tripod in a variety of positions. The rate of fire is 215 rounds-per-minute and the maximum range is 1500 metres. Research LAG-40
Lag is slang for a convict.
Lag was old British slang for to be transported for a crime, or for a convict transported for a crime.
Lag was 17th century British slang for water.
Lag is Australian slang for to inform on someone.