Webster's Revised Unabridged Dictionary · 1913

Incumbency

Incumbency , noun

[From Incumbent.]

1.
The state of being incumbent; a lying or resting on something.
2.
That which is physically incumbent; that which lies as a burden; a weight. — Evelyn
3.
That which is morally incumbent, or is imposed, as a rule, a duty, obligation, or responsibility.
The incumbencies of a family. — Donne
4.
The state of holding a benefice; the full possession and exercise of any office.
These fines are only to be paid to the bishop during his incumbency. — Swift