Bible Dictionaries
Palm

1910 New Catholic Dictionary

A symbol of victory; adopted by the early Christians to represent the triumph of the faithful over the enemies of the soul. They are the special badge of martyrs, and the Congregation of Rites, 1688, regarded the representation of a palm on a catacomb tomb as proof that a martyr was interred there, but this was later declared untenable. The palm tree gives shade and fruit, and hence is emblematic of God's protection and grace.

Bibliography Information
Entry for 'Palm'. 1910 New Catholic Dictionary. https://www.studylight.org/​dictionaries/​eng/​ncd/​p/palm.html. 1910.