"label something" is correct and usable in written English.
You can use it when you want to urge someone to assign a label or name to something. For example, "Please label the items in the box."
One country may label something obscene while another protects it under freedom of speech.
Darfur proves that the US government's willingness to label something 'genocide' is not enough.
As soon as we label something, our curiosity about that thing diminishes.
So I'm never quite sure what people mean when they label something an "issue book".
"Unfortunately people are very quick in life to label something that they're uncomfortable with," he added.
To label something a memoir is, in effect, to tell a reader that they cannot doubt it.
Labeling something "classified" or important to "national security" does not make it so.
As attacks against Muslims have risen, many have been labeled something other than terrorism.
We live in an era in which labeling something "fake" is becoming synonymous with political inconvenience.
"I never thought that I would be labeled something like Generation X because of that movie," Mr. Hawke says.
(After all, there is little cost to a publisher for labelling something Y.A. if the label doesn't put off adult readers).
