A positive gesture (3)
I believe the answer is:
nod
This might be a double definition.
'a positive' is the first definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'gesture' is the second definition.
(nod is a kind of gesture)
Can you help me to learn more?
(Other definitions for nod that I've seen before include "Drowse" , "slight bow" , "Gesture of agreement" , "Brief bowing gesture" , "Incline the head" .)