<Ul> <Li> upset forging: A process that increases the diameter of a workpiece by compressing its length . </Li> <Li> underlug: 1 . The locking lugs on a break - action firearm that extend from the bottom of the barrels under the chamber (s) and connect into the receiver bottom . 2 . The metal shroud underneath the barrel of a revolver that surrounds and protects the extractor rod . The two types of underlugs include half - lug, meaning the shroud does not run the entire length of the barrel but instead is only as long as the extractor rod, and full - lug, meaning the shroud runs the full length of the barrel . </Li> <Li> underwater firearm: a firearm specially designed for use underwater . </Li> </Ul> <Li> upset forging: A process that increases the diameter of a workpiece by compressing its length . </Li> <Li> underlug: 1 . The locking lugs on a break - action firearm that extend from the bottom of the barrels under the chamber (s) and connect into the receiver bottom . 2 . The metal shroud underneath the barrel of a revolver that surrounds and protects the extractor rod . The two types of underlugs include half - lug, meaning the shroud does not run the entire length of the barrel but instead is only as long as the extractor rod, and full - lug, meaning the shroud runs the full length of the barrel . </Li> <Li> underwater firearm: a firearm specially designed for use underwater . </Li>

Equipment ed placed under the ground crossword clue