(Middle Ages) an attendant and shield bearer to a knight; a candidate for knighthood
source: WordNet 3.0
a title of respect for a member of the English gentry ranking just below a knight; placed after the name
source: WordNet 3.0
Originally, a shield-bearer or armor-bearer, an attendant on a knight; in modern times, a title of dignity next in degree below knight and above gentleman; also, a title of office and courtesy; -- often shortened to squire.
source: Webster 1913
verb
To wait on as an esquire or attendant in public; to attend.