This is the 13321st most frequent Swedish word.
tänder
Teeth.
In this sentence, 'tänder' is the present tense form of the verb 'tända,' meaning 'to light' or 'to ignite something.'
Jag tänder ljuset i rummet.
I am lighting the lamp in the room.
Here, 'tänder' is used as a noun referring to the plural of 'tand,' which means 'tooth.'
Mina tänder är vita och friska.
My teeth are white and healthy.
In this sentence, 'tänder' is used in an idiomatic expression, 'tända på något,' which metaphorically means 'to become excited about something.'