What does SMAW stand for?

Second Marine Aircraft Wing

Shielded Metal Arc Welding

Short-Range Man Portable Antitank Weapon (SAUS)

Shoulder-launched Multipurpose Assault (or Automatic) Weapon (SAUS)

Shoulder Launched Multipurpose Assault Weapon - Marine Corps

Shoulder-Launched Multipurpose Assault Weapon (MCD)

Shoulder-Mounted Assault Weapon (DWSG)

Submerged Metal Arc Weld - Nuclear energy (NRCH)