"Change List", a set of changes to files (akin to a single git commit).

"Commit Queue", infrastructure to automatically check/build/test/verify/etc... CLs before merging into the tree. See also the Chromium CQ

"Device under test", used to refer to the system running Chromium [OS] and where tests are being executed.

"Green Tree Task Force"

"Looks good to me", commonly used to approve a code review.

"Last known compilable revision" - similar to LKGR (below), just taking only the compile into account, no tests.

"Last known good revision", the last build that passed a minimal set of tests on the buildbots.

"Last known good manifest", the last manifest version that passed a minimal set of tests.

"Minimum viable product", used to refer to the subset of a feature we want to ship initially.

"Preflight queue", used to describe bot configurations in the waterfall that run to test/gate changes before they're allowed into the tree for everyone to see. See also the PFQ FAQ