lynchpin

Noun	1.	lynchpin - a central cohesive source of support and stability; "faith is his anchor"; "the keystone of campaign reform was the ban on soft money"; "he is the linchpin of this firm" backbone, keystone, linchpin, mainstay, anchor support - something providing immaterial support or assistance to a person or cause or interest; "the policy found little public support"; "his faith was all the support he needed"; "the team enjoyed the support of their fans"
	2.	lynchpin - pin inserted through an axletree to hold a wheel on linchpin pin - a small slender (often pointed) piece of wood or metal used to support or fasten or attach things

Word Browser