Real Dictionary

involve
verb: If a situation or activity involves someone, they are taking part in it.
verb: If a situation or activity involves something, that thing is a necessary part or consequence of it.
verb: If one thing involves you in another thing, especially something unpleasant or inconvenient, the first thing causes you to do or deal with the second.
verb: If you involve someone else in something, you get them to take part in it.
verb: If you say that someone involves themselves in something, you mean that they take part in it, often in a way that is unnecessary or unwanted.

involve in American English
to enfold or envelop as in a wrapping
transitive verb: to include as a necessary circumstance, condition, or consequence; imply; entail

involve in British English
to include or contain as a necessary part