Has such dancing little impact? (3)

I believe the answer is:

tap

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

'impact?' is the definition.
(I know that tap is a type of blow)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for tap that I've seen before include "In America, it's a spigot" , "British faucet" , "Secret (phone) intercept" , "Knock or draw upon" , "milk" .)

I've seen this clue in The Globe and Mail.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.