I. adjective Etymology: 2bolt Date: circa 1580 not fastened by bolts, II. adjective Etymology: 4bolt Date: circa 1598 not sifted
UNBOLTED
Meaning of UNBOLTED in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012