Crossword Genius

Time passed in a trance (5)

Ross

I believe the answer is:

spell

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'a trance' is the definition.
(synonyms)

I cannot understand how the remainder of the clue works.

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(Other definitions for spell that I've seen before include "Bewitching incantation" , "... mean" , "Period (of enchantment?)" , "Charm - recite letters in word" , "Magical charm; period" .)

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