A flicker of light? (6)
I believe the answer is:
switch
This might be a double definition.
'a flicker' is the first definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'light?' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'of' is the link.
Can you help me to learn more?
(Other definitions for switch that I've seen before include "On/off device" , "Circuit breaker; change" , "Device for completing or breaking an electrical circuit" , "that turns on the power" , "turn" .)