Definition of "dusky"

A beech wood with silver firs in it rolled down the face of the hill, and the maze of leafless twigs and dusky spires cut sharp against the soft blueness of the evening sky.

1907, Harold Bindloss, chapter 1, in The Dust of Conflict‎

You have your lovers - dusky beaus / Not made of the poetic stuff / That sports an Apollonian nose, / And wears a sleek Byronic cuff.

1877, Henry Kendall, “Ode to a Black Gin”, in The Australian Town and Country Journal, page 24

I think that he was a little horrified at my cool way of taking the honour, but the fact was that I did not feel overwhelmed with gratitude at the prospect of seeing some savage, dusky queen, however absolute and mysterious she might be, more especially as my mind was full of dear Leo, for whose life I began to have great fears.

1886 October – 1887 January, H[enry] Rider Haggard, She: A History of Adventure, London: Longmans, Green, and Co., published 1887

They "stuck on" fairly well, but sometimes these dusky jockeys fell off during the race.

1887, Harriet W. Daly, Digging, Squatting, and Pioneering Life in the Northern Territory of South Australia, page 63

The dusky sons of Mohammed have been having a high old time down at the British India Company’s wharves during the past few days. [. .] It was the great week of ‘Hobson-Jobson,’ as it is known out East, or the time of the Mohurram.

1903 April 8, Queensland Figaro, Brisbane, page 23, column 2

In the raw attempt to apply the perfected institutions of Anglo-Saxon civilization to the descendants of the dusky races which inhabited Mexico before the discovery of America by Columbus, the Mexican statesmen of 1824 put the principles of democratic government to a terrible ordeal.

1911, James Creelman, Diaz: Master of Mexico‎, D. Appleton and Company, page v