You can search within The American Heritage® Dictionary of the English Language, Fourth Edition by clicking the Dictionary link in the browse section of the Advanced Search screen.
To browse the Dictionary:
From the Home Page, click the Dictionary link. Enter your word in the Browse for field and click the Browse button. A list of entries is displayed.
Use the left and right arrows or A - Z links to browse through the Dictionary Browse List.
To view an entry, click on the hyperlinked word.