You searched for: “folk etymologies
folk etymology (s), (noun), folk etymologies (pl)
1. The incorrect origin for a word; an idea about the origin of a word that is generally believed but is incorrect.
2. A modification of a linguistic form according either to a falsely assumed etymology, or to a historically irrelevant analogy.
2. A popular but false notion of the origin of a word.

A few humorous examples of folk etymology

The word woman is derived from woe- + man; and so, "a bringer of woe".
The origin of virgin, comes from vir, Latin for "man", and gin, "a trap" and so a virgin is "a mantrap" or a "trapper of men".

—Compiled from Humorous English by Evan Esar;
Horizon Press, New York; 1961; page 27.
This entry is located in the following units: etym- (page 2) -ology, -logy, -ologist, -logist (page 28)