Or somebody/something/somewhere
Definition 1 of 1
Pro Tip 1/3Choice Expansion
Use it to suggest alternatives when the first choice is unavailable or unsuitable. 
We could go to the beach, or somewhere indoors if it rains.
Pro Tip 2/3Indecision Expression
It reflects uncertainty or flexibility in making a choice between similar options. 
Should I wear the red dress, or something less formal?
Pro Tip 3/3Social Tact
Implies politeness by offering choices, instead of making demands. 
Can you help me with this, or somebody who has a moment?