To and fro

What is To and fro?

To and fro definition and meaning on Dictionary terms:
adjective
back-and-forth: to-and-fro motion.

noun, plural to-and-fros.
a continuous or regular movement backward and forward; an alternating movement, flux, flow, etc.: the to-and-fro of the surf.

 

reference: https://www.dictionary.com/browse/to–and–fro

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