Definitions

1. noun

A small, needle-like or hair-like structure, especially one found in the skeletons of certain organisms, such as sponges or coral.

“The coral reef’s intricate structure was composed of numerous interlocking spicules.”

2. noun

A fine thread or hair, especially one that is the last to disappear from the surface of a material, such as a paint or varnish.

“After the paint dried, a spicule of dust remained on the surface.”

3. verb

To form or become spicules, especially in the process of drying or evaporating.

“As the varnish spiculed off, the surface of the wood became visible.”