Dictionary
Words, grammatical forms and meanings linked to the ontology.
fly like a rock en · VERB
Pronunciation
Meanings
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(qualifier:simile, sarcastic, sometimes) 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.
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"...
1970, American Association of Physics Teachers, The Physics Teacher, volumes 8–9, page 541:
Forms
Antonyms
fly like a bird