Definition.com
Chresis is literally 'use', 'employment', 'function' but suggestive of 'intimacy' or 'acquaintance'.
Definition.com
Chresis is the 'use' of a male boy as a woman (i.e. pederasty), which is recommended to the wise man
Definition.com
Chresis is literally the 'use' of sexuality, which often signals the wrong use (i.e. non-procreative and pervaded by desire), which is the result of man's having hardened his heart against God.
Definition.com
Chresis is literally 'use' but, in the context of Aristotle, it points to the idea that the use of things is a mode of practicing and is endowed with an ethical dimension.