IPA: //sʌbˈneɪ.zəl//
KK: /sʌbˈneɪzl/
Referring to a position that is situated directly beneath the nose.
The doctor examined the subnasal area for any signs of infection.
Subnasal → It is formed from "sub-" (meaning under) and "nasal" (from Latin "nasalis", meaning related to the nose). The word "subnasal" refers to something located under the nose.
Think of something that is 'under' ('sub-') the 'nose' ('nasal') — that's what subnasal means.