Crossword Genius

Squanders money at Chelsea (5)

Ross

I believe the answer is:

blues

I'm a little stuck... Click here to teach me more about this clue!

'chelsea' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand the remainder of the clue.

Can you help me to learn more?

(Other definitions for blues that I've seen before include "Oxbridge athletes" , "Conservatives" , "Gloom" , "Jazz classic (2,5,5) - See 9" , "Australian redheads" .)

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