Idioms and Phrases with set one's sights on
set one's sights on
Have as a goal, as in She's set her sights on law school. This expression alludes to the device on a firearm used for taking aim. [Mid-1900s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.