What does ANFO mean?

ANFO meaning in Urban Dictionary

Ammonium Nitrate and gas Oil (i.e. liquid nitromethane and/or diesel fuel) combination. An explosive composition employed by Timothy McVeigh to attack the Alfred P. Murrah national business building in Oklahoma City on April 19, 1995, when he parked a Ryder vehicle containing about 6,200 pounds associated with the compound while watching building.