selanniemi Share definition Flag Finnish slang for 'bastard child'. Originated in the working class neighborhoods of Espoo. "Huono lapsi hän on Selanniemi." (Poor child she is illegitimate.) selanniemi by Huuhkajat March 11, 2009 0 0 Get merch Get the selanniemi mug. Buy Now — $32.95 See more merch