n. a notable achievement; "he performed a great feat"; "the book was her finest effort"

n. use of physical or mental energy; hard work; "he got an A for effort"; "they managed only with great exertion"

n. earnest and conscientious activity intended to do or accomplish something; "made an effort to cover all the reading material"; "wished him luck in his endeavor"; "she gave it a good try"

n. a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"

n. [serious attempt to achieve something]