What is the meaning of Esquire?

A lawyer.

A male member of the gentry ranking below a knight.

An honorific sometimes placed after a man's name.

A gentleman who attends or escorts a lady in public.

A squire; a youth who in the hopes of becoming a knight attended upon a knight

A shield-bearer, but also applied to other attendants.

To attend, wait on, escort.

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).

esquire (a title)

esquire

(an untitled) nobleman; blasonado.

An escudero, originally carrying the armour of a knight; a man of the gentry ranking below a knight.

Source: wiktionary.org