Definition of "lazily"

Her ensign dropped limp like a rag; the muzzles of the long eight-inch guns stuck out all over the low hull; the greasy, slimy swell swung her up lazily and let her down, swaying her thin masts.

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 203

Disembarkation seemed a slow business. From the deck one watched a "Merchant Navy" Pacific drift lazily along the track beside the wall of the Marine Station, and little South Eastern tanks go snorting fussily about.

1946 January and February, 'Talisman', “Bückeburg to Aberayron”, in Railway Magazine, page 41