Having a shape or cross-section like the cross-section of a bell.

Having a shape or cross-section like the cross-section of a (typical western) pear. / (slang) Wrong, usually in the phrase go pear-shaped.

Shaped like the letter L or its mirror image

tapering at each end

shaped like the letter S

Shaped like the letter V; especially, designating one of the two major types of valley (the other being U-shaped), typically formed by flowing water.

shaped like a needle

Shaped like the letter "U"; bent such that the two ends are parallel. / Having a cross-section similar in appearance to a broad U.

Having the traditional shape of a heart (♥), that is pointed at one end and indented at the opposite side.

(archaeology) A two-dimensional region with parallel sides and pointed ends, usually representing the emergence and later disappearance of an entity in a graph over time.