the GNU version of the Collaborative International Dictionary of English
adj. Dark; gloomy; murky.
n. Darkness; gloom; murk.
The Century Dictionary and Cyclopedia
n. etc. See murk, etc.
Word Usage
"English cries of the soldiers were answered in English by the Boers, and slouch hat or helmet dimly seen in the mirk was the only badge of friend or foe."