home run

(Baseball) hit in which a player is able to circle all four bases and score one point (usually the ball is hit out of the playing field)

In baseball, a home run is a hit in which the batter is able to circle all the bases, ending at home plate and scoring a run himself (along with a run scored by each runner who was already on base), with no errors by the defensive team on the play which result in the batter advancing for extra bases. Today, the feat is typically achieved by hitting the ball over the outfield fence between the foul poles (or making contact with either foul pole) without first touching the ground, resulting in an automatic home run.
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Noun
1. a base hit on which the batter scores a run
(synonym) homer
(hypernym) base hit, safety, bingle
(hyponym) solo homer, solo blast
2. something that exactly succeeds in achieving its goal; "the new advertising campaign was a bell ringer"; "scored a bull's eye"; "hit the mark"; "the president's speech was a home run"
(synonym) bell ringer, bull's eye, mark
(hypernym) success

Used in the context of general equities. Large capital gain in a stock in a short period of time.