Linchpin (Noun)
Meaning 1
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".
Classification
Nouns denoting cognitive processes and contents.
Synonyms
Hypernyms
Meaning 2
Pin inserted through an axletree to hold a wheel on.
Classification
Nouns denoting man-made objects.