noun

• (clothing) A set of clothes to be worn together, now especially a man's matching jacket and trousers (also business suit or lounge suit), or a similar outfit for a woman.
  "A canister of flour from the kitchen had been thrown at the looking-glass and lay like trampled snow over the remains of a decent blue suit with the lining ripped out which lay on top of the ruin of a plastic wardrobe."
• (by extension) A garment or set of garments suitable and/or required for a given task or activity: space suit, boiler suit, protective suit, swimsuit.
• (Pakistan, women's speech) A dress.
• (derogatory, slang, metonymic) A person who wears matching jacket and trousers, especially a boss or a supervisor.
  "Be sure to keep your nose to the grindstone today; the suits are making a "surprise" visit to this department."

verb

• (transitive) To make proper or suitable; to adapt or fit.
  "but let your owne Diſcretion be your Tutor: Sute the Action to the Word, the Word to the Action,"
• (transitive, said of clothes, hairstyle or other fashion item) To be suitable or apt for one's image.
  "The ripped jeans didn't suit her elegant image."
• (transitive, figurative) To be appropriate or apt for.
  "The nickname "Bullet" suits her, since she is a fast runner."
• (most commonly used in the passive form, intransitive) To dress; to clothe.
  "So went he suited to his watery tomb."