Where does “kaidekoukku” come from?

kaidekoukku (Finnish) comes from Finnish kaide, from Ottoman Turkish قاعده, from Arabic قَاعِدَة — rule, principle; foundation, base.

Ancestry of “kaidekoukku”, step by step

kaidekoukku traces back through two separate lines of ancestry.

via Finnish kaide

StepLanguageWordMeaning
1Finnishkaiderailing, handrail, banister, balustrade, balcony...
2Ottoman Turkishقاعدهbase, foundation, that upon which anything stands or is founded
3Arabicقَاعِدَةrule, principle; foundation, base

via Finnish koukku

StepLanguageWordMeaning
1Finnishkoukkuhook; addiction; used in inessive, elative and...
2Proto-Finnickoukkuhook, hook-shaped tool
Every word from Arabic قَاعِدَة →Every word from Ottoman Turkish قاعده →Every word from Finnish kaide →