Definition of "lullaby" []

• A soothing song with which to lull a child to sleep. (noun)
• To quiet with or as if with a lullaby. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I sincerely feel that if we could resurrect the word lullaby, we would stand a good chance of hearing one on MTV."
• "Two other things: you might try some calming music at bedtime (we use the Baby Einstein lullaby CD, but whatever works)."
• "The word lullaby has been in the English language since the Middle Ages - one of several, such as rockaby and hushaby, which show how generations of mothers and caretakers have helped their children fall asleep through music."