a mullion or a strut that separates the glass panels in a window
2. Christian Church
a woman who is part of a religious order that renounces worldly possessions and sexual relationships
monial in American English
(ˈmouniəl)
noun
archaic
a mullion
Word origin
[1300–50; earlier muniall, ME moniel ‹ MF moinel ‹ ?]This word is first recorded in the period 1300–50. Other words that entered Englishat around the same time include: address, finish, scoop, stuff, twist