What is a very slight convulsive or spasmodic contraction of certain muscles, external or internal. Few men can look down from a great height without creepings and crispations. O. W. Holmes called?

crispation — A very slight convulsive or spasmodic contraction of certain muscles, external or internal. Few men can look down from a great height without creepings and crispations. O. W. Holmes. (Webster's 1913.)

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