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Definition of sign in phrasal verb from the Oxford Advanced Learner's Dictionary

sign in

phrasal verb
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sign in/out | sign somebody in/out
  1. to write your/somebody’s name when you arrive at or leave an office, a club, etc.
    • All visitors must sign in on arrival.
    • You must sign guests out when they leave the club.
See sign in in the Oxford Advanced American Dictionary
pepper
noun
 
 
From the Word list
Oxford 3000
A1
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