Any one of numerous species of longwinged sea birds belonging to the family Procellaridæ. The small petrels, or Mother Carey's chickens, belong to Oceanites, Oceanodroma, Procellaria, and several allied genera.

relatively small long-winged tube-nosed bird that flies far from land

The Petrel was a British sounding rocket. The Petrel 1 was launched, like the Skua 1, with 3 Chick booster rockets. The Petrel 1 was 3.34 m long, had a diameter of 19 cm and reached a maximum altitude of 140 kilometers.