Related Clues:
- Ref. with more than 2 1/2 million quotations
- Ref. work that took 70 years to complete
- Its first complete ed. was published in 1928
- Ref. with about 600,000 word-forms
- Source with 600,000 words
- Massive ref
- Venerable ref
- Massive Brit. reference
- Ref. with about 22,000 pages
- Heavy ref
- Work that's been punningly called a 'lex icon': Abbr
- UK reference
- Word ref. started in 1857
- Wordsmith's ref
- Heavy Brit. reference set