Mrigashira - head of Deer is the fifth star of the lunar mansions

mrigashira nakshatra- The fifth star of the lunar mansion Mrigashīra \"the deer\'s head\". Etymologically Mṛgaśira is a composite of two Sanskrit words,” mṛga “meaning animal/beast and “śira “meaning head or precisely, the top of the head.

https://jothishi.com/mrigashirsha-nakshatra/