'Palms' in the Bible

And Moses saith unto him, 'At my going out of the city, I spread my palms unto Jehovah -- the voices cease, and the hail is not any more, so that thou knowest that the earth is Jehovah's;

Then they came to Elim, where there were 12 springs of water and 70 date palms, and they camped there by the waters.

you will put [them] all on the palms of Aaron and on the palms of his sons, and you will wave them as a wave offering before Yahweh.