sign is on the Basic English 850 List.
side - sign - silk
sign is one of the 1000 most common headwords.
side - sign - similar

Pronunciation change

Noun change

Singular
sign

Plural
signs

 
Signs to tell people which way to go
  1. (countable) A flat thing with a few words or pictures on it to tell people something.
    I saw a stop sign, so I stopped the car.

Verb change

Plain form
sign

Third-person singular
signs

Past tense
signed

Past participle
signed

Present participle
signing

 
Someone signing his name on a picture
  1. When someone signs a piece of paper, they write their signature on it.
    They signed a contract saying exactly who would do the work and how much money they would be paid.
  2. If a company signs someone, they hire them to work.