- A simpleton; a fool. - Any tern of the genus Anous, as A. stolidus. - The arctic fulmar (Fulmarus glacialis). Sometimes also
applied to other sea birds. - An old game at cards. - A small two-wheeled one-horse vehicle. - An inverted pendulum consisting of a short vertical flat
spring which supports a rod having a bob at the top; -- used for
detecting and measuring slight horizontal vibrations of a body to which
it is attached.