This is the 574th most frequent Swedish word.
stefan
"Stefan" is a Swedish male given name, equivalent to "Stephen" or "Steven" in English.
Here, 'Stefan' is used as a proper noun and refers to a specific individual, presumably a friend of the speaker.
Min vän Stefan berättade en rolig historia.
My friend Stefan told a funny story.
In this context, 'stefan' is used as a colloquial term, representing a specific type of motion or adjustment, possibly jargon or an idiomatic usage.
Han gjorde en stegring och tog en stefan för att landa säkert.
He made an upward climb and added a maneuver to land safely.
Under this use, 'Stefan' serves as a chosen name for a natural phenomenon, highlighting its use in a naming or descriptive sense.