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rube
Rube Goldberg
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rubidium-strontium dating
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Rubicon

Ru·bi·con [ rbi kòn ] or ru·bi·con [ rbi kòn ]


noun 
Definition:
 
point of no return: a point at which any action taken commits the person taking it to a further course of action that cannot be avoided

[Early 17th century. After the stream in N Italy that Julius Caesar crossed illegally with his army in 49 bc, making civil war inevitable]

cross the Rubicon to do something that commits you to a particular course of action

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