Odd lump holding close, you said, to clock regulator (8)
I believe the answer is:
pendulum
'to clock regulator' is the definition.
(I've seen this before)
'odd lump holding close you' is the wordplay.
'odd' is an anagram indicator.
'holding' indicates putting letters inside.
'close' becomes 'end' (I've seen this in other clues).
'you' becomes 'u' (commonly used in online communication).
'lump' with letters rearranged gives 'plum'.
'end'+'u'='endu'
'plum' placed around 'endu' is 'PENDULUM'.
'said' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for pendulum that I've seen before include "Swinging device used to regulate clock" , "A swinging weight as in old clock" , "Oscillating part of clock" , "It swings from side to side - in a clock?" , "Vacillator" .)