acuminate acuminate /əˈkjuːmɪˌneɪt/

adjective

1. (of a leaf shape) narrowing to a slender point  ( acuminate )
   (of a leaf shape) narrowing to a slender point
   

verb

1. Make sharp or acute; taper; make (something) come to a point  ( acuminate )
   make sharp or acute; taper; make (something) come to a point