Meaning of the word "plug away at" in English

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

plug away at

US /plʌɡ əˈweɪ æt/
UK /plʌɡ əˈweɪ æt/

Phrasal Verb

to work steadily and persistently at something, especially something difficult or tedious

Example:
She had to plug away at her thesis for months before it was finally finished.
If you just plug away at it, you'll eventually understand the concept.