Related Clues:
- Lexicon from a British uni
- Abbr. at the bottom of some applications
- J.R.R. Tolkien did some research for it
- It's had OMG since 2011
- Its Jan. 2018 additions include "hangry" and "mansplain"
- Its Jan. 2018 additions include 'hangry' and 'mansplain'
- Multi-vol. reference set
- Anything inside an envelope: Abbr
- It added ''e-waste'' in 2020
- Big ref. for word lovers
- Ref. whose first edition took decades to complete
- Multi-volume word ref
- Bottom-of-business-letter notation
- Lexicon with 600,000+ wds
- Ref. with thousands of definitions