Ring about one to get engineers round around third of July (6)
I believe the answer is:
circle
'ring' is the definition.
(synonyms)
'one to get engineers round around third of july' is the wordplay.
'one to get engineers' becomes 'cire' (I can't justify this - if you can you should give a lot more credence to this answer).
'round' indicates putting letters inside.
'around' becomes 'c' (abbreviation for 'circa').
'third of july' becomes 'l' (rrd letter of 'july').
'c'+'l'='cl'
'cire' enclosing 'cl' is 'CIRCLE'.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for circle that I've seen before include "Group with shared profession or acquaintances" , "Draw line around (something)" , "Level in theatre; round" , "London Underground line represented in yellow" , "Geometric shape" .)