What does agency mean?
The definition of agency
A”gen*cy, n.; pl. Agencies.
Etym: [agentia, fr. L. agens, agentis: cf. F. agence. See Agent.]

1 The faculty of acting or of exerting power; the state of being in action; action; instrumentality. The superintendence and agency of Providence in the natural world. Woodward.
2 The office of an agent, or factor; the relation between a principal and his agent; business of one intrusted with the concerns of another.
3 The place of business of am agent.

Synonyms
— Action; operation; efficiency; management.