Definition:
A "vinegar worm" is a tiny, microscopic creature, known as a nematode, that lives in environments where fermentation happens, such as in vinegar and other decomposing organic materials. It feeds on bacteria and other microorganisms that help break down substances.
In scientific or biological discussions, you might encounter the term "vinegar nematode," which refers to the same creature but uses a more technical term.
While "vinegar worm" specifically refers to the nematode associated with vinegar, "worm" in general can refer to various elongated animals, including earthworms and other types of parasites.
In summary, "vinegar worm" refers to tiny organisms that play a role in fermentation, particularly in vinegar.