banjo clock

noun

a clock of the early 19th century in the U.S., having a drumlike case for the dial mounted on a narrow, tapering body, with a boxlike bottom containing the pendulum and its weight.

Origin of banjo clock

An Americanism dating back to 1795–1805

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018