Heark″en, v. t. 1. To hear by listening.
hearkened now and then
Some little whispering and soft groaning sound. Spenser.
2. To give heed to; to hear attentively.
The King of Naples... hearkens my brother's suit. Shak.
To hearken out, to search out.
If you find none, you must hearken out a vein and buy. B. Johnson.