Meaning of “dash” - Learner’s Dictionary

dash

verb uk us /dæʃ/

B2 [ I ] to go somewhere quickly:

She dashed downstairs when she heard the phone.
I must dash. I've got to be home by 7 p.m.
dash sb's hopes

to destroy someone's hopes:

Saturday's 2-0 defeat dashed their hopes of reaching the final.
dash (sth) against/on, etc literary

to hit or throw something with great force, usually causing damage:

Waves dashed against the cliffs.

(Definition of “dash verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)