in the shape of a U
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U-shaped Definition from Language, Idioms & Slang Dictionaries & Glossaries
u-shaped
\u"-shaped`\ (?), a. having the form of the letter u; specif. (phys. geog.), of valleys, resembling a broad u in cross profile.
U-shaped Definition from Encyclopedia Dictionaries & Glossaries
Many shapes have metaphorical names, i.e., their names are metaphors: these shapes are named after a most common object that has it. For example, "U-shape" is a shape that resembles the letter U, a bell-shaped curve has the shape of the vertical cross-section of a bell, etc.
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