linchpin
linch pin
- n a central cohesive source of support and stability
he is the linchpin of this firm - n pin inserted through an axletree to hold a wheel on
- That was the linchpin in convincing them.
- As that seminal group's linchpin, Robertson wrote spooky, spunky and romantic valedictories to the mythic ghosts of American history: rounders and robbers, gamblers and wanderers .
- For Citigroup, another financial linchpin, they're 21%.