pennonelike
Pennonelike is an adjective used to describe something that resembles a pennon. A pennon is a small, usually triangular flag or banner, often with a long tapering end, that was historically used by knights and noblemen. Therefore, "pennonelike" suggests a shape or form that is similar to these flags. This might include objects that are long and narrow with a tapering point, or have a generally flag-like appearance.
The term can be applied in various contexts. In botany, for example, a plant part might be