This is the 12721st most frequent Swedish word.
spänn
"Spänn" is slang for "kronor" (Swedish currency), meaning "bucks" or "money."
Here, 'spänn' is used as a slang term for Swedish currency, equivalent to 'bucks' in English.
Jag köpte en bok för hundra spänn.
I bought a book for a hundred bucks.
In this sentence, 'spänd' indicates a state of physical or emotional tension, deriving from the root word 'spänning' (tension).
Kalle var helt spänd innan tävlingen.
Kalle was completely tense before the competition.
In this instance, 'spänna' is a verb meaning 'to tighten' or 'to fasten,' often used in practical situations.