Definition of "inland"

In this wide Inland ſea, that hight by name / The Idle lake, my wandring ſhip I row, […]

1590, Edmund Spenser, “Book II, Canto VI”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, stanza 10, page 259

Brutes […] / Ruminate heedleſs of the ſcene outſpread / Beneath, beyond, and ſtretching far away / From inland regions to the diſtant main.

1785, William Cowper, “Book V. The Winter Morning Walk.”, in The Task, a Poem, […], London: […] J[oseph] Johnson; […], page 221

Happy he who, like Ulysses, has made an adventurous voyage; and there is no such sea for adventurous voyages as the Mediterranean—the inland sea which the ancients looked upon as so vast and so full of wonders.

1904–1906, Joseph Conrad, “The Nursery of the Craft”, in The Mirror of the Sea, 1st American edition, New York, N.Y., London: Harper & Brothers, published October 1906, pages 254–255

a wall sufficient to defend Our inland from the pilfering borderers.

1599, William Shakespeare, “The Life of Henry the Fift”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene ii]

The greatest waves of population have rolled inland from the east.

1836, Sharon Turner, The History of England […]