This is the 623rd most frequent Swedish word.
malin
"Malin" is a Swedish female given name.
Here, 'Malin' is a proper noun, used as a person's name.
Malin är min bästa vän.
Malin is my best friend.
In this sentence, 'Malin' is again a proper noun indicating a person's name.
Malin målade en vacker tavla.
Malin painted a beautiful painting.
Here, 'malin' could be interpreted as a variation or derivative of 'mal', which relates to grinding or pigment, though this contextual usage might be regional or archaic.