"Semiautomatic weapons" are firearms that automatically reload and prepare the next bullet after firing one shot. This means you only need to pull the trigger for each shot, rather than manually reloading after each shot. Full definition
Trump repeated his pledge to unilaterally do away with bump stocks — devices that allow semiautomatic weapons to fire like automatic weapons — which he said would give lawmakers one less issue to worry about. (washingtonpost.com)
Some of the survivors of the shooting have become staunch advocates for stricter gun laws including banning semiautomatic weapons like the AR - 15 rifle used in the killings. (local10.com)
Congress might ban «bump stocks»: Since the Las Vegas shooting in October, there's been bipartisan support to ban a device the shooter used that can make a legal semiautomatic weapon fire more like an illegal fully automatic gun. (washingtonpost.com)