Verses with the word palms in the New Testament (3 verses):

Matthew 26:67
Then did they spit in his face, and buffeted him; and others smote him with the palms of their hands,

Mark 14:65
And some began to spit on him, and to cover his face, and to buffet him, and to say unto him, Prophesy: and the servants did strike him with the palms of their hands.

Revelation 7:9
After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands;