Talks grandly of the snakes going around the street (6)
I believe the answer is:
boasts
'talks grandly' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their -s form.
Maybe they are linked in a way I don't understand?
'snakes going around the street' is the wordplay.
'snakes' becomes 'boas' (boa is a kind of snake).
'going around' is an insertion indicator.
'the street' becomes 'st' (abbreviation).
'boas' enclosing 'st' is 'BOASTS'.
'of the' is the link.
Can you help me to learn more?
(Other definitions for boasts that I've seen before include "Brags in praise of oneself" , "Brags, blows" , "Blows one's own trumpet" , "Brags, shows off" , "crows" .)