A state of unconsciousness from which one may not wake up, usually induced by some form of trauma.
A tuft or bunch, such as the assemblage of branches forming the head of a tree, a cluster of bracts when empty and terminating the inflorescence of a plant, or a tuft of long hairs on certain seeds.
A cloud of dust surrounding the nucleus of a comet.
A defect characterized by diffuse, pear-shaped images that in an ideal image would appear as points.
In a person, unwillingness to take action.
Lack of activity; sluggishness; said especially of the uterus, when, in labour, its contractions have nearly or wholly ceased.
The property of a body that resists any change to its uniform motion; equivalent to its mass.