Space agency overlooking length belonging to the nose (5)
I believe the answer is:
nasal
'belonging to the nose' is the definition.
I can't judge whether this definition defines the answer.
'space agency overlooking length' is the wordplay.
'space agency' becomes 'nasa' (I've seen this before).
'overlooking' means one lot of letters go next to another (down clues only).
'length' becomes 'l'.
'nasa'+'l'='NASAL'
Can you help me to learn more?
(Other definitions for nasal that I've seen before include "Relating to a facial organ" , "Pertaining to the nose" , "Of sound, as if it came through the nose" , "Hooters" , "Like some spray" .)