To perceive with the mind; detect:
1898, Winston Churchill, chapter 5, The Celebrity:
To have a normally functioning ear or ears; be able to hear sounds
To carry out or comply with (a command, for example).
To speak softly.
Find another word for hark. In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for hark, like: notice, harken, pay-attention, listen, give-heed, attend, hear, heed, obey, give (or lend) an ear and harking.