Definition of "asphaltic"

The aggregated SoyleDeath with his Mace petrific, cold and dry,As with a Trident smote, and fix’t as firmAs Delos floating once; the rest his lookBound with Gorgonian rigor not to move,And with Asphaltic slime,

1667, John Milton, “Book X”, in Paradise Lost. […], London: […] [Samuel Simmons], and are to be sold by Peter Parker […]; [a]nd by Robert Boulter […]; [a]nd Matthias Walker, […], lines 293-298

On mouldering piles amid asphaltic mud [the pilgrim] / Hears the hoarse bittern, where Gomorrah stood;

1789, Erasmus Darwin, The Loves of the Plants, Canto 4, lines 275-276, in The Botanic Garden, London: J. Johnson, p. 166

[…] the congealed frost lay ten inches thick in a hard, asphaltic pavement,

1851 November 14, Herman Melville, chapter 2, in Moby-Dick; or, The Whale, 1st American edition, New York, N.Y.: Harper & Brothers; London: Richard Bentley, page 8

As Sodomes Apples, neere th’Asphalticke lake,Of specious shew, yet touch’t, to ashes turning,So are sinnes poysons sweete, yet bane to take;

1619, Stephen Jerome, Origens Repentance‎, London: Roger Jackson, Section 2, p. 29

[…] who gather from the fragrant shrubThe aromatic balsam, and extractIts milky juice along the lovely sideOf winding Jordan, till immers’d it sleepBeneath the pitchy surface, which obscuresTh’ Asphaltic lake.

1737, Richard Glover, Leonidas‎, London: R. Dodsley, Book 3, lines 349-354, p. 93