You may also need to check https://chromium.googlesource.com/chromiumos/docs/+/master/glossary.md.

• LGTM: "Looks good to me", commonly used to approve a code review.
• PTAL: Please take a look.
• RSLGTM: "Rubber-stamp looks good to me". The reviewer approving without doing a full code review.
• TSC: Technical Steering Committee. Detailed info see TSC.
• WIP: "Work In Progress" - e.g. a patch that's not finished, but may be worth an early look.
• WPT: web-platform-tests
• godbolt: Compiler Explorer run compilers interactively from your web browser and interact with the assembly. Was created by and is primarily administrated by Matt Godbolt.
• primordials: Pristine built-ins that are not affected by prototype pollution and tampering with built-ins.