nub
Concise Oxford English Dictionary © 2008 Oxford University Press:
nub/nʌb/
▶noun
- 1 (the nub) the crux or central point of a matter.
- 2 a small lump or protuberance.
■ a small chunk or nugget of metal or rock.
– origin C17: appar. a var. of dial. knub ‘protuberance’.
'nub' also found in these Oxford entries:
