NEW TO THE OED
200
This 3-word inquiry was already a catchphrase when Bugs Bunny first asked it in 1940
What's up, doc?
400
Ordinal term for a president's husband
the first gentleman
600
Term for an official document certifying one's inoculation status, perhaps for travel
vaccine passport
800
It's the fiery term for a cheap prepaid mobile device that can be discarded to protect the user's anonymity
a burner phone
1000
"To stand on" these, meaning to benefit from the knowledge of great predecessors
the shoulders of giants