Squib 2 : A device containing a small quantity of ignition compound in contact with a bridge wire; it is used to ignite fires, or activate automatic sprinklers and other fusible link devices
Ralph W. Burklin & Robert G. Purington, Fire Terms: A Guide to Their Meaning and Use, National Protection Association, Boston, MA 1980 USA. (Guide: Meaning and Use, Nat Prot Association Fr Srvc - Amer) {457}