Call outfit around noon, initially (4)
I believe the answer is:
ring
'call' is the definition.
('ring' can be a synonym of 'call')
'outfit around noon initially' is the wordplay.
'outfit' becomes 'rig' ('rig' can be a synonym of 'outfit'**).
'around' means one lot of letters goes inside another.
'initially' says to take the initial letters.
The initial letter of 'noon' is 'n'.
'rig' placed around 'n' is 'RING'.
(Other definitions for ring that I've seen before include "Frodo's burden (Tolkien)" , "Contact" , "0?" , "Encircle; arena" , "Telephone - as bells do" .)