1. a small group of indispensable persons or things; - Example: "five periodicals make up the core of their publishing program" [syn: core, nucleus, core group]
WordNet (r) 3.0 (2006):
core group
n 1: a small group of indispensable persons or things; "five
periodicals make up the core of their publishing program"
[syn: core, nucleus, core group]