herald (plural heralds) 1  A messenger, especially one bringing important news. 2  A harbinger, giving signs of things to come. ( 3 heraldry) An official whose speciality is heraldry, especially one between the ranks of pursuivant and king-of-arms. ( entomology) A moth of the species Scoliopteryx libatrix.
a fire nozzle weighs approximately  ten to fifteen pounds.
Oxygen is not flammable, nor does it explode. However, oxygen will make a fire burn quicker. To. avoid the chances of a fire: â¢ Never smoke while using your oxygen concentrator. â¢ Do not use open fire or flames near the oxygen concentrator.