Gutter Trench 1 : (1) A trench dug into a slope below a wildland fire to catch rolling or burning materials. (2) Part of an undercut line. See: Undercut Line
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}