adjective. curved like a sickle.
1. Verb, base form There are dozens of words that can be used to describe the shape of leaves, like acicular, or narrow and pointed; orbicular, or round; and falcate, which means sickle-shaped. 2. Noun, singular or mass Examine the lobes on the southern red oak (Quercus falcate) and species such as turkey and Shumard oak.