Other forms: heeded; heeding; heeds
Heed is an old word, meaning "to listen to and follow." It can also be used as a noun: "Take heed of my instructions," said the wizard, "for the magic potion will work only by the light of the full moon."
The most common use of heed is with warnings, as in "You'd better heed my advice, or you'll be in serious trouble!" The word derives from Old English hēdan and is related to the Dutch hoeden and German hüten — from Germanic cultures where fairy tales with mysterious warnings and magical consequences abound.