skim

milk from which the cream has been removed

figurative; to deal with, understand, or describe only the most obvious parts of a subject or problem

figurative; to only touch on a subject without detail

to read or consider something quickly, without studying it in detail

to fly or move very close to the surface of something

to move quickly and lightly over a surface; can also mean to read something quickly

to move quickly and lightly over a surface like water