köken: 18th century, borrowed from Low German Spant, extended form of Middle Low German span, deverbal from spannen. Comparable with High German Gespann (“that which is clamped, fastened; hence, team of horses, oxen”). Compare Dutch spant.
köken: From Proto-Finnic *kaari, from Proto-Uralic *këŋere. Cognate with Estonian kaar. * ((law) code, act): Semantic loan from Swedish balk (literally “beam”), perhaps by comparison with the rib of a boat or ship. * ((taxonomy) division, phylum): Semantic development from “(law) code, act”.
köken: Inherited from Old Czech řebro, from Proto-Slavic *rebrò, from Proto-Balto-Slavic *rébran, from Proto-Indo-European *h₁rebʰróm, from Proto-Indo-European *h₁rebʰ-.
köken: It is attested as Bordas (personal name, 1355), bõda (“loom comb”) (1405). The meaning "rib" is attested since 1578. Ultimately from a Slavic language; compare Proto-Slavic *bьrdo.