Real Dictionary

hit
If a CD, film, or play is a hit, it is very popular and successful.
countable noun: A hit is a single visit to a website.
countable noun: If someone who is searching for information on the internet gets a hit, they find a website where there is that information.
verb: If a bomb or missile hits its target, it reaches it.
verb: If something hits a person, place, or thing, it affects them very badly.
verb: If you hit a particular high or low point on a scale of something such as success or health, you reach it.
verb: If you hit someone or something, you deliberately touch them with a lot of force, with your hand or an object held in your hand.
verb: When a feeling or an idea hits you, it suddenly affects you or comes into your mind.
verb: When one thing hits another, it touches it with a lot of force.

hit in American English
to come against, usually with force; strike
intransitive verb: to strike with a missile, a weapon, or the like; deal a blow or blows
transitive verb: to deal a blow or stroke to

hit in British English
verb: to deal (a blow or stroke) to (a person or thing); strike