• 1  iz. projection [protuberance]

• 2  iz. nick, notch, ledge

  oinak ipintzeko koskak: ledges to put one's feet on

• 3  iz. key (point), crux; question, point

  hor dago koska!: that's the crux of the matter!

• 4  iz. [koskada] bite

• 5  iz. (Art. Graf.) indentation

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•  iz. (Ipar.) collision, crash, impact