Noun
person whose skin and hair lack natural coloring because of a hereditary condition
A black mother has baffled scientists after giving birth to three albino children. The parents are dark-skinned Afro-Brazilians, yet three of their five children are albinos.
Noun
actions that cause great irritation (or even anger)
In Life Among the Savages, Shirley Jackson's humor is snappy and her children, though messy and obstreperous, seem never to inspire in her anything worse than a fond exasperation.
Adjective
(of animals) living in flocks or loosely organized
The giant snakehead is a gregarious fish, with the young often following their mother closely. Protective mothers will attack men who have disturbed the snakehead's school.
The hippopotamus is widely considered to be the No. 1 most dangerous animal in Africa. They may look like goofy, awkward oafs, but make no mistake: nearly everything about the hippopotamus is deadly.
Noun
creator, inventor, or instigator of something
Anna Jarvis, the originator of Mother's Day, was deeply disturbed by the commercialization of the holiday, and fought to reform it the rest of her life.
The Obamas' dog, Bo, was unsuccessful in his first home. Plans for him to be a companion for an older female dog went awry because he irritated her with attempts to suckle.
Noun
human or animal conception without fertilization
A boa constrictor mother has given "virgin birth" to 22 female offspring, all of which have no father and are half-clones of their mother, according to new research.