'Almond tree' in the Bible

Also when they shall be afraid of that which is high, and terrors are in the way, and the almond tree shall blossom, and the grasshopper shall be a burden, and desire shall fail: because man goes to his eternal home, and the mourners go about the streets:

Moreover the word of the LORD came unto me, saying, Jeremiah, what see you? And I said, I see a rod of an almond tree.