People stray from the dictionary definition of words all the time. Myself included! Misusing words doesn’t say much about our intelligence, though! More likely, what these misused words exemplify is how language evolves and adapts over time.
How it’s commonly used: casually read, skim over.
What it actually means: to read thoroughly.
The dictionary definition of peruse is almost the opposite of common usage. Well, that’s ironic! (Or is it?! More on irony later…) You don’t peruse a magazine at the beach, salon or doctor’s office. Rather, to peruse is to carefully consider a piece of writing.