African's visit blocked by northeast winds (10)
I believe the answer is:
senegalese
'african's' is the definition.
(Senegalese is an example)
'visit blocked by northeast winds' is the wordplay.
'visit' becomes 'see' (seeing is a kind of visiting).
'blocked by' is an insertion indicator (block can mean to plug a gap in something).
'northeast' becomes 'NE' (abbreviation).
'winds' becomes 'gales' (gale is a kind of wind).
'ne'+'gales'='negales'
'see' placed around 'negales' is 'SENEGALESE'.
(Other definitions for senegalese that I've seen before include "from West Africa" , "Relating to a West African country" .)