I heard in a movie description this line:
She spots the compass in the dirt, then picks it up and blows it off.
This line describes the protagonist picks up her compass off the ground and blows the dust off of it. I fount that expression odd, because to me "blow something off" would mean "to blow that thing off": for example, The wind blow off the papers. If you "blow the table off," does it mean you "blow to dust off the table"?
Or did I hear it wrong? Is the verb used here not blow? I am putting the audio clip here (uploaded to an audio sharing site Clyp) for reference.