To spread the arms and legs out carelessly and untidily while sitting or lying down. (Cambridge Dictionary)
Sit, lie, or fall with one’s arms and legs spread out in an ungainly way. (Oxford Dictionaries)
If you sprawl somewhere, you sit or lie down with your legs and arms spread out in a careless way. (Collins Dictionary)
To creep or clamber awkwardly. (Merriam – Webster)
Defining Urban Sprawl.
Ocean Sprawl: What Is It And What It Means for Business.