This is the 500th most frequent Swedish word.
känna
"To feel" or "to know (personally)."
In this sentence, 'känna' (as 'känner') means 'to feel', relating to personal emotions or states.
Jag känner mig glad idag.
I feel happy today.
Here, 'känna' (as 'känner') conveys 'to know', indicating familiarity with a person.
Känner du Lisa?
Do you know Lisa?
In this context, 'känna' refers to 'to feel' in a physical sense, such as touching or sensing with hands.