sign-in

[sahyn-in]

noun

1. an act, an instance, or a time of signing in.

sign in

verb

1. to sign or cause to sign a register, as at a hotel, club, etc

2. to make or become a member, as of a club

Word History and Origins

Origin of sign in¹

First recorded in 1945–50; noun use of verb phrase sign in

Idioms and Phrases

Record one's arrival by signing a register, as in He signed in both himself and his wife. [c. 1930] For the antonym, see sign out.

Related Words

• appear 
• arrive 
• become 
• enter 
• get 
• happen 
• hit 
• materialize 
• move 
• occur 
• reach 
• show 
• show up