Re:Breaking a myth: Data shows you don’t actually need a co-...
by dhruvkar on Saturday August 27, 2016 @02:55PM
(#12373637)
not OP, but it (usually) refers to a small group of like minded individuals that bounce ideas off of each other.
A more proper definition: http://www.thesuccessalliance.com/what-is-a-mastermind-group...
What does "in masterminds" mean here?