Rain Pitchforks Meaning

(idiomatic) to rain heavily.

Example: "What there is no question of is," said Linette, "that my poor frock will be spoiled. It is going to rain pitchforks. There will be water enough to drown you before we reach the house, and your mites of shoes will be lost; but come along." — Eliza Lee Follen, "Piccolissima", 1857