Meaning of the word "scratch the surface" in English

What does "scratch the surface" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

scratch the surface

US /skrætʃ ðə ˈsɜːrfɪs/
UK /skrætʃ ðə ˈsɜːrfɪs/
"scratch the surface" picture

Idiom

1.

to deal with only a very small part of a subject or problem

Example:
We've only begun to scratch the surface of this complex issue.
There's so much more to learn; we've barely scratched the surface.
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