The term crescentlike can be defined as lunate, which is a six-letter word. Lunate is an adjective that describes something having the shape of a crescent or a curved shape resembling a crescent moon. It is often used to describe the shape of certain bones in the human body, such as the lunate bone in the wrist. It can also be used to describe the shape of certain objects, such as the crescent-shaped blade of a scimitar.