Crossword Genius

Thus, half days can be refreshing (4)

Ross

I believe the answer is:

soda

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

'be refreshing' is the definition.
I can't tell whether this defines the answer.

'thus half days' is the wordplay.
'thus' becomes 'so' (synonyms).
'half' suggests halving the letters.
'days' with half the letters taken is 'da'.
'so'+'da'='SODA'

'can' is the link.

Can you help me to learn more?

(Other definitions for soda that I've seen before include "Fizzy water, goes well with whiskey" , "Whisky mixer" , "pressurised liquid" , "Accompaniment to whisky" , "In the US, a sweet fizzy drink" .)

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