Merriam-Webster Onlineand Dictionary.com

Search the dictionary or the thesaurus in both of these sites.

OneLook Dictionaries.

Searches many general, slang/regional, and special subject online dictionaries simultaneously.

American Heritage Dictionary

Write-Express Online Ryming Dictionary

RhymeZone, rhyming Dictionary and Thesaurus.

You can specify end, last syllable, double, beginning, or first syllable rhymes.

The Biographical Dictionary

28,000 short entries of men and women from ancient times to the present.

Biography.com

Oxford English Dictionary

Ask Mr. Hodara or Ms. Lindsay for password.