axillar
noun
ax·il·lar ag-ˈzi-lər 
ak-ˈsi- ˈag-zə- ˈak-sə-
ak-ˈsi- ˈag-zə- ˈak-sə- -ˌlär
: an axillary part (such as a feather)
Word History
Etymology
noun derivative of axillar "axillary," adjective, from axilla + -ar
First Known Use
1541, in the meaning defined above