The same lady pays for the education and clothing of an orphan from the workhouse, on condition that she shall aid the mistress in such menial offices connected with her own house and the school as her occupation of teaching will prevent her having time to discharge in person.
There are no more uses of "menial" in the book.
Show samples from other sources
The fraternity pledges are given all the menial jobs.
Her work experience consists of menial jobs, but she’s performed them reliably.