from The American Heritage® Dictionary of the English Language, 4th Edition
- intransitive v. To listen attentively.
- idiom hark back To return to a previous point, as in a narrative.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To listen attentively; often used in the imperative.
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To listen; to hearken.
from The Century Dictionary and Cyclopedia
- To hear; listen to.
- To listen; harken: now chiefly used in the imperative, as an incitement to attention or action, as in hunting. See phrases below.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. listen; used mostly in the imperative
Middle English harken, herken, from Old English *heorcian.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English herken, herkien, from Old English *hercian, *heorcian, *hiercian, ultimately from Proto-Germanic *hauzijanan (“to hear”) + formative/intensive -k. Cognate with Scots herk ("to hark"), North Frisian harke ("to hark"), West Frisian harkje ("to listen"), obsolete Dutch horken ("to hark, listen to"), Middle Low German horken ("to hark"), German horchen ("to hark, harken to"). (Wiktionary)