'avenery' originates from Anglo-Norman/Old French, specifically the word 'avenerie' or 'avenarie', where the element related to keeping or training hawks.

'avenery' changed from Middle English/Anglo-Norman word 'avenerie' (Old French avenerie) and eventually became the modern English rare/archaic word 'avenery'.

Initially, it meant 'a place for keeping or training hawks,' and over time the sense has remained essentially the same but the word has become rare/archaic in modern English.