planer bar

A device attached to a planer for the purpose of effecting in part the work of a slotting or shaping machine. planer-centers, s. pl. Devices similar to lathe centers for supporting small work on the bed of a planing-machine. planer-head, s. Mach.: The slide-rest of a planing-machine or planer. planer-tree, s. Botany: A tree belonging to the genus Planer a (q. v.).