Webster’s Revised Unabridged Dictionary · 1913
Luke
Luke (lūk), a. [Prob. fr. lew, perh. influenced by AS. wlæc warm, lukewarm, remiss. Cf. Lew.] Moderately warm; not hot; tepid. — Luke′ness, n. [Obs.]
Nine penn'orth o'brandy and water luke. Dickens.