Definition of "interminable"

After supper Sir Pitt Crawley began to smoke his pipe; and when it became quite dark, he lighted the rushlight in the tin candlestick, and producing from an interminable pocket a huge mass of papers, began reading them, and putting them in order.

1847 January – 1848 July, William Makepeace Thackeray, “Crawley of Queen’s Crawley”, in Vanity Fair […], London: Bradbury and Evans […], published 1848, page 61

The sea-reach of the Thames stretched before us like the beginning of an interminable waterway.

1899 February, Joseph Conrad, “The Heart of Darkness”, in Blackwood’s Edinburgh Magazine, volume CLXV, number M, New York, N.Y.: The Leonard Scott Publishing Company, […], part I, page 193