1. Attention or notice: Take heed because a tornado warning has been made by the weather people.
2. Serious attention paid to someone or to something; such as, a warning, a piece of advice, or a request: Sam didn't listen to the heed that was given on the radio and TV regarding the tornado warnings and his house collapsed around him.
3. Etymology: Old English hedan, "to take care, attend", from West Germanic hodjan. The term essentially survives only in literary use and as the object of verbs ("take heed", etc.).

1. To pay close attention to while hearing something; especially, to the advice or warnings that have been presented: There are many who heeded the warnings by the authorities and so they escaped safely.

Some people were not heeding the advice to find a better shelter and so they lost their lives.

2. To seriously consider what someone seems to know and to take it into account when considering what to do: Craig urged his children to heed the weather report, which was predicting freezing rain, before deciding to go downtown to see a movie.

Many people will be heeding the President's call to vote in the next election; but they may not necessarily vote for him.