Type or type IN

If the following sentences are correctly written, should I use "type" or "type in" below?

You must type/type in the word you are looking for on Google.

or

If you are looking for the meaning of something, type it / type it in on Google.

or

If you are looking for the meaning of something, type it / type it in in the Google search box.

Also, are there other ways to say this?

What about "If you are looking for the meaning of something, Google it"?

Thank you.