incumbent

Imposed as an obligation or duty; obligatory.

Lying, leaning, or resting on something else.

Currently holding a specified office.

A person who holds an office or ecclesiastical benefice.

In geology, resting upon: said of one series of strata which is supported by a subjacent one.

Lying or resting on something.

Specifically

Lying, leaning, or resting lengthwise, in whole or in part, upon a surface to which there is only one point of actual attachment or none.

Lying or resting as a duty or obligation; imposed, and pressing to performance.

One who discharges stated functions; the holder of an office of any kind; especially, one who discharges ecclesiastical functions; one who holds a benefice.