(idiomatic) To take a position which is harmful to one's own interests.

simple past tense and past participle of rain on one's parade

present participle of rain on one's parade

(transitive) To put an end to; to defeat or frustrate (a scheme or project).

Third-person singular simple present indicative form of rain on one's parade

tree onion

(obsolete, dialect) A fish, the grenadier.

Delia antiqua, a cosmopolitan pest of crops, whose larvae or maggots feed on onions, garlic and other bulbous plants.

The medical condition of hydrothorax.

(idiomatic, colloquial, humorous) A notional look of anticipation or hope (either for sex or a child) in one's father's eyes at or around the time of one's conception.