Family entertained by magic lanterns (4)
I believe the answer is:
clan
'family' is the definition.
(I've seen this in other clues)
'entertained by magic lanterns' is the wordplay.
'entertained by' says the answer is hidden in the clue (the clue hosts or entertains the answer).
'CLAN' is hidden within 'magic lanterns'.
(Other definitions for clan that I've seen before include "Large family forming close group, big in Scotland" , "Macdonald, perhaps" , "Kin group" , "Scottish family grouping" , "Scottish tribe" .)