TM 9-2520-270-34
land: an area of a surface partly machined (as with grooves) that is left without such
machining
nonferrous: does not contain iron
race:
a track or channel in which something rolls or slides, such as a groove for the balls, in
a bearing
recess:
indentation
scored: grooved, scratched, notched
seat: to rest properly upon
trunnion:
transmission side support
Glossary 2