טִיבּוּעִין, (טָבַע I) sinking; לט׳ for being sunk, at the risk of receiving no consideration. Keth. 76ᵇ קידושין לט׳ ניתנו the object of value given at betrothal is made a present even at the risk of death before the consummation of marriage; B. Bath. 145ᵃ