Visit OneLook's free online reverse dictionary (see link below). Here, you will be able to enter a phrase or single word describing the word you are trying to find.
Scroll down the page and read through the instructions and guidelines. Because a simple search can produce hundreds, even thousands, of results, OneLook offers tips for refining and narrowing your search.
Enter a word or phrase describing the elusive word in the box at the top of the page marked "Describe concept here." Click "Find words."