get (something) for (someone or something)
1. To retrieve or obtain something for someone else. Let me get those copies for you.
2. To retrieve or obtain something for a particular thing or use. The mechanic is going to get a new muffler for my car. Hey, I got the ingredients we'll need for that recipe.
get something for someone
to obtain something for the use or benefit of someone. I will get a new book for you. Sorry I messed the old one up. Would you get a glass of water for me?
get something for something
to obtain a part or attachment for an object. I need to get a part for the vacuum cleaner. Would you please get a bulb for my flashlight?