American Heritage Dictionary
(3)
Century Dictionary
GNU Webster's 1913
(1)
WordNet
(3)
Elsewhere on the web
It's a measure of Coach Hiro's grasp of the game that the Knights won their league without the presence of a tall sharpshooter, which is what Hiro was some two decades ago.— Starbulletin Headlines
Junior sharpshooter was the Yellowjackets 'leading three-point shooter on the year.
The sharpshooter is a half-inch-long insect that damages grape vines 'circulation, interrupting the flow of water and nutrients.
I like this kid a lot; he's a southpaw sharpshooter, with good boxing skills.

Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.