Time passed in a trance (5)
I believe the answer is:
spell
'a trance' is the definition.
(synonyms)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for spell that I've seen before include "Bewitching incantation" , "... mean" , "Period (of enchantment?)" , "Charm - recite letters in word" , "Magical charm; period" .)