linchpin

1. A central cohesive element: Reduced spending is the linchpin of their economic program.

2. A locking pin inserted in the end of a shaft, as in an axle, to prevent a wheel from slipping off.

3. A locking pin inserted crosswise (as through the end of an axle or shaft).

4. One that serves to hold together parts or elements that exist or function as a unit .

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Top Words by points	Points	Word Game
linchpin	15	Scrabble

2 Letters	Scrabble® Points
li	2
hi	5
pi	4
in	2

3 Letters	Scrabble® Points
phi	8
nil	3
lip	5
lin	3
nip	5
inn	3
ich	8
hip	8
hin	6
hic	8
pic	7
pin	5
chi	8

4 Letters	Scrabble® Points
chin	9
pili	6
linn	4
lich	9
inch	9
hili	7
clip	8
chip	11

5 Letters	Scrabble® Points
lichi	10
linin	5
lipin	7
nihil	8
chili	10
pinch	12

6 Letters	Scrabble® Points
inclip	10

8 Letters	Scrabble® Points
linchpin	15