Definition of "nub" []

• A protuberance or knob. (noun)
• A small lump. (noun)
• The essence; the core: the nub of a story. (noun)

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.

• "The diagram also shows that a rod should be pushed ideally 1. 25W, although because each nub is of length W, the push amount could theoretically range from fractionally more than 0. 25W to fractionally less than 2. 25W."
• "The nub is that whatever the presenter may think, people were offended - both in the talk and those who saw the slides later."
• "In Palladium this is actually something called a "nub" -- in their marketing materials a "Trusted Operating Root" or "TOR" -- but we can pretend it's the OS kernel instead."