I. adjective Date: 1781 directed inward, II. noun Date: 1899 one that reenters, one that is ~, an indentation in a landform
REENTRANT
Meaning of REENTRANT in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012