Crossword Genius

Is reminiscent of, it strikes one (6)

Ross

I believe the answer is:

smacks

I'm a little stuck... Click here to teach me more about this clue!

'is' is the definition.
Although both the answer and definition are verbs in their -s form, I don't understand how one could define the other.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for smacks that I've seen before include "Loud slaps for fishing vessels" , "Punishes" , "Has a hint (of)" , "Strikes with the hand" , "Hits the fishing vessels" .)

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