What is the meaning of Senu?

sinus (pouch or cavity in any organ or tissue)

breast

dative/locative singular of seno

inflection of sens:

1. accusative/instrumental masculine/feminine singular
2. genitive masculine/feminine plural

accusative/instrumental masculine/feminine singular

genitive masculine/feminine plural

instrumental masculine singular of senas

dative singular of seno

accusative singular of sena

dative/locative singular of seno

Source: wiktionary.org