Probably from H2496 in the sense of tasting; properly the palate or inside of the mouth; hence the mouth itself (as the organ of {speech} taste and kissing): - (roof of the) {mouth} taste.
Sng 2:3As the apple tree among the trees of the wood, so is my beloved among the sons. I sat down under his shadow with great delight, and his fruit was sweet to my tasteH2441. ▼▼
Sng 7:9And the roof of thy mouthH2441 like the best wine for my beloved, that goeth down sweetly, causing the lips of those that are asleep to speak. ▼▼
Lam 4:4The tongue of the sucking child cleaveth to the roof of his mouthH2441 for thirst: the young children ask bread, and no man breaketh it unto them.
Eze 3:26And I will make thy tongue cleave to the roof of thy mouthH2441, that thou shalt be dumb, and shalt not be to them a reprover: for they are a rebellious house. ▼
Hos 8:1Set the trumpet to thy mouthH2441. He shall come as an eagle against the house of the LORD, because they have transgressed my covenant, and trespassed against my law. ▼