Related Clues:
- Letter inclusion (Abbr.)
- 21,728-pg. work that is constantly updated
- Ref. updated quarterly
- British multivolume set (Abbr.)
- Bus. letter abbr
- Ref. that has included 'crowdfunding' and 'photobomb' since 2015
- Insertion with a letter (Abbr.)
- UK word authority
- Famed multivolume ref. wk
- 'Reading the ___: One Man, One Year, 21,730 Pages' (2008 book)
- Brit. resource for writers
- Webster's Third competitor, for short
- Subj. of the 2003 book 'The Meaning of Everything'
- Dict. with over 600,000 words
- Bks. with millions of quotations