Freebase(0.00 / 0 votes)Rate this definition: Hydraulic conductivity. Hydraulic conductivity, symbolically represented as, is a property of vascular plants, soil or rock, that describes the ease with which a fluid can move through pore spaces or fractures.
Crispus Attucks was an African-American man killed during the Boston Massacre, making him the first casualty of the American Revolution.
Private Hugh Montgomery. Private Hugh Montgomery was the first British soldier to fire in the Boston Massacre. He was also identified by many witnesses in the trial as the man who killed Crispus Attucks.