Meaning

noun (New Testament) the Apostle closely associated with St. Paul and traditionally assumed to be the author of the third Gospel

noun one of the four Gospels in the New Testament; contains details of Jesus's birth and early life

originFrom Middle English leuȝke, leuk, leuke, lewk, lewke, louk, luk, luke, lheuc, probably from Old English *hlēoc beside hlēow- (whence lew); compare rēoc and rēow, slēac and unslēaw, etc. Alternatively, perhaps from a verb, Old English *hlēowcian, *hlīewcian (“to make tepid or lukewarm”), whence possibly Middle English leuken (“to make lukewarm”). Compare also Dutch leuk (“lukewarm”), West Frisian…

Etymology from Wiktionary, CC BY-SA 3.0