English

Verb

fly like a rock

1. (simile, sometimes sarcastic) to travel through the air with little or no benefit from aerodynamic lift

   If the wings aren't big enough your paper airplane will fly like a rock.

   • 1970, American Association of Physics Teachers, The Physics teacher, Volumes 8-9, page 541:

     When students have compared the wing areas and weights by squaring and cubing the linear ratios, they correctly predict the large one will fly "like a rock"...

Antonyms

• fly like a bird