willow tree

Boyd’s Bible Dictionary:

Before the captivity the willow was an emblem of joy

Concise Bible Dictionary:

Salix Babylonica
Salix Babylonica
Salix Babylonica

Strong’s Dictionary of Hebrew Words:

Transliteration:
tsaphtsaphah
Phonic:
tsaf-tsaw-faw’
Meaning:
from 6687; a willow (as growing in overflowed places)
KJV Usage:
willow tree