What does wormcast mean?
A wormcast is a small mound of soil and organic material expelled by an earthworm, especially when the worm comes to the surface. On lawns and in gardens, these small deposits are often noticed after rain. They are also useful to gardeners and ecologists, who may use the word in a more technical or observational register than ordinary conversation suggests. In British English, the compound is commonly written as one word, while the two-word spelling “worm cast” is also established, especially in American usage. The word has older fishing associations: an obsolete noun sense referred to a quantity or “cast” of worms used as bait, and the obsolete verb meant to cast worms. Today, however, the familiar sense is the material left behind by a worm. Wormcast is thus a vivid compound that names both an everyday trace of animal activity and a small but meaningful deposit of organic matter.
A small mound of soil and organic material expelled by an earthworm, especially at the surface. In obsolete usage, a wormcast could also mean a cast or quantity of worms used as fishing bait.
"A line of small wormcasts showed where the earthworms had been active."
The modern sense is usually descriptive; the bait-related sense is obsolete.
To cast a worm or worms as bait.
"The angler wormcast a worm into the current."
Obsolete, occurring chiefly in historical or literary descriptions of fishing.
The plural is formed by adding -s; the two-word spelling “worm casts” can also be used for the plural.
"Fresh wormcasts covered the soil after the storm."
A wormcast is nature’s smallest compost delivery—earthworm work, one tiny mound at a time.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of wormcast
Wormcast is an English compound of worm and cast. Worm descends from Old English wyrm, while cast belongs to a Germanic family represented by Old Norse kasta, “to throw.” The compound was applied both to a cast or quantity of worms used in fishing and to the material expelled by an earthworm; the latter is now the usual modern sense.
Related word forms
How wormcast is actually used
In contemporary use, wormcast is mainly descriptive or mildly technical, particularly in gardening, ecology, and discussions of earthworm activity. The one-word spelling is especially common in British English; the two-word spelling “worm cast” is also established and common in American English. The fishing-related noun and verb uses are obsolete.