hourly

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Occurring every hour.
• adjective Frequent; continual.
• adjective By the hour as a unit.
• adverb At or during every hour.
• adverb Frequently; continually.
• noun An employee paid by the hour.

from The Century Dictionary.

• Happening or done every hour; occurring hour by hour; continuing from hour to hour; hence, frequent; often repeated.
• Every hour; hour by hour; frequently.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Happening or done every hour; occurring hour by hour; frequent; often repeated; renewed hour by hour; continual.
• adverb Every hour; frequently; continually.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective That happens every hour
• adjective Non-salaried, blue-collared
• adverb At intervals of an hour.
• noun Something produced each hour.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective occurring every hour or payable by the hour
• adverb every hour; by the hour