(Middle Ages) an attendant and shield bearer to a knight; a candidate for knighthood
"In the bustling courtyard of the medieval castle, young Thomas served as esquire to Sir William, polishing his armor and carrying his banner into battle."
a title of respect for a member of the English gentry ranking just below a knight; placed after the name
"When introducing Sir Arthur's younger brother at the country gathering, the host politely addressed him as Mr. Thomas Blackwood Esquire to acknowledge his status within the local gentry."
A lawyer.
"The heraldry professor explained that the charge on the shield was an esquire because its points reached all the way to the border while maintaining a gyron-like bearing."
A bearing somewhat resembling a gyron, but extending across the field so that the point touches the opposite edge of the escutcheon.
To attend, wait on, escort.
"The young man hurried to open the door and step aside so that the distinguished guest could pass through first, fulfilling his role as an esquire for the evening."