Definition of "overnight" []

• Lasting for, extending over, or remaining during a night: an overnight trip; an overnight guest. (adjective)
• For use over a single night or for a short journey: overnight supplies. (adjective)
• Mailed for guaranteed delivery on the next day: an overnight package. (adjective)
• Happening as if in a single night; sudden: an overnight success. (adjective)
• During or for the length of the night: Let the meat marinate overnight. (adverb)

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 know this is a little bit off topic, but it is about search engine optimization so I figure some of you SEO guys wouldn't mind answering my question: Is there any way I can make my website rank for a term overnight?"
• "And of course 'overnight' is a relative term not unlike mañana."
• "Rare is the politician who could clear his name overnight and chooses not to."