Definition of "clift"

So downe he fell, as an huge rockie clift, / Whose false foundation waues haue washt away [...].

1590, Edmund Spenser, “Book I, Canto XI”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie

so broad is the bay here, we could scarce perceive the great high clifts on the other side: by them we Anchored that night and called them Riccards Cliftes.

1624, John Smith, Generall Historie, Kupperman, published 1988, page 91