Meaning

• To become wide or wider.

  "His eyes widened as her negligee fell to the floor."

• To make wide or wider.

• To let out clothes to a larger size.

  "She widened his trousers for him."

• To broaden or extend in scope or range.

  "The police widened their enquiries."

• To convert to a data type that can hold a larger number of distinct values.