Some metaphors now current have been twisted out of their original meaning without those who use them even being aware of the fact. For example, toe the line is sometimes written as tow the line.

a pedestrian life

A heavy clay soil is bad for all neuralgics, and the house should be dry, and on a sandy or gravel soil. The desideratum for all neuralgic affections is perpetual summer […]

We designed candidate diagnostic RT-PCR assays before release of the first sequence of the Wuhan virus.