Emily Dickinson Lexicon

IN-CUM'BENT, a. [L. incumbens, incumbo; in and cumbo, to lie down; Sp. incumbir.]

1. Lying or resting on. And when to move th' incumbent load they try. Addison.
2. Supported; buoyed up. And fly incumbent on the dusky air. Dryden.
3. Leaning on, or resting against; as, incumbent stamens or anthers in botany. Martyn.
4. Lying on, as duty or obligation; imposed and emphatically urging or pressing to performance; indispensable. All men, truly zealous, wilt perform those good works which are incumbent on all Christians. Sprat.