Laterally swing big stone (4)
I believe the answer is:
rock
This might be a double definition.
'laterally swing' is the first definition.
'rock' can be an answer for 'swing' (I've seen this before). I'm unsure of the 'laterally' bit.
'big stone' is the second definition.
'rock' can be an answer for 'stone' (I've seen this before). I am not sure about the 'big' bit.
Can you help me to learn more?
(Other definitions for rock that I've seen before include "Big stone - music" , "Hard stone or lively music" , "to soothe baby" , "Music; diamond" , "Edinburgh - -" .)