Clue: Such noses? Upturned & blunt, primarily! (4)
Answer: SNUB
Explanation: Such noses? Upturned & blunt, primarily! (4)
First letters ('primarily') of '**S**uch **N**oses **U**pturned & **B**lunt'. Note the ampersand to blunt the objection that it is not included in the primary letters.