one's best shot

(one's) best shot

The utmost of one's effort, ability, or determination spent attempting to do something. I gave writing my best shot, but I just don't think I can make a career out of it. That was our best shot—let's hope it was enough to fix things.

See also: shot

one's best shot

Fig. one's best attempt (at something). That was his best shot, but it wasn't good enough. I always try to give something my best shot.

See also: shot