1.NounA back (dorsal, spinal, or spinelike aspect) that is a saw or is sawlike in form, as:
A ridge or mountain range whose silhouette is suggestive of sawteeth.
"sawback knife sawback machete"
2.NounA ridge or mountain range whose silhouette is suggestive of sawteeth.
3.NounA knife, often a machete, whose spine has sawteeth.