bastion /bastˈyən or bast-i-ən/

1. A kind of tower at the angle of a fortification
2. A defence, defender (figurative)

• endocytosis
• endocytotic
• endoderm
• endodermal
• endodermic
• endodermis
• endodermises
• endoderms
• endodontics
• endodyne
• end of story
• end of the line
• end-of-the-pier
• endogamic
• endogamies
• endogamous
• endogamy
• endogen
• endogenic
• endogenies
• endogenous
• endogenously
• endogens
• endogeny
• endolymph