Synonym of plumule (“the first bud, or growing point, of a plant embryo, situated above the cotyledons”)
In the obsolete theory of pangenesis propounded by the English scientist Charles Darwin (1809–1882): a hypothetical particle once thought to be the basis of heredity.
Synonym of dendritic spine (“a small membranous protrusion from the dendrite of a neuron that typically receives input from a single axon at the synapse”)
A sharply pointed, barbed, and easily detached needle-like structure that grows on the skin of a porcupine or hedgehog as a defense against predators.
Something having the form of a quill, such as the fold or plain of a ruff, or (weaving) a spindle, or spool, upon which the thread for the woof is wound in a shuttle.
The lower shaft of a feather, specifically the region lacking barbs.
The plectrum with which musicians strike the strings of certain instruments.
A thin piece of bark, especially of cinnamon or cinchona, curled up into a tube.
The tube of a musical instrument.
A pen made from a feather.
The pen of a squid.
Any pen.
To subject (a woman who is giving birth) to the practice of quilling (blowing pepper into her nose to induce or hasten labor).
To pierce or be pierced with quills.
To decorate with quillwork.
To form fabric into small, rounded folds.
To write.