a swindler, especially at cards
(of an object) having an edge or point that is able to cut or pierce something
cut the cake with a very sharp knife
keep tools sharp
distinct in outline or detail; clearly defined
the job was a sharp contrast from her past life
the scene was as sharp and clear in his mind as a film
having or showing speed of perception, comprehension, or response
her sharp eyes missed nothing
his old mind was not so sharp as it once was
(of musical sound) above true or normal pitch