A lump or uneven thick place in yarn or thread.
Early 19th century: of unknown origin.
“I know why this yarn was so cheap, every 5 stitches I come to another slub!”
Nothingburger (noun) (Chiefly US)
A person or thing of no importance, value, or substance. Now esp.: something which, contrary to expectations, turns out to be insignificant or unremarkable.
1950s: from nothing and burger. Added to the OED October 2018.
Minimal government; specifically a (hypothetical) form of government that does not interfere with individual rights and civil liberties, and that has itself no right to levy taxes upon legitimately acquired property.
1960s; earliest use found in Ralph Borsodi (1888–1977). From min- + -archy.