noun

• (usually US, law) A lawyer.
• (archaic) A squire; a youth who in the hopes of becoming a knight attended upon a knight
• (obsolete) A shield-bearer, but also applied to other attendants.
  "The office of the esquire consisted of several departments; the esquire for the body, the esquire of the chamber, the esquire of the stable, and the carving esquire; the latter stood in the hall at dinner, carved the different dishes, and distributed them to the guests."

verb

• (transitive, obsolete) To attend, wait on, escort.

noun

• (heraldry, rare) The lower of the halves into which a square is divided diagonally, a single gyron, but potentially larger (extending across the shield) or smaller (for example, on Mortimer's arms).
  "Thre pallets between ij Esquires bast dexter and sinister of the second."