n.
1.Dutch astronomer who calculated the size of the universe and suggested that it is expanding (1872-1934)
2.an organism (person or animal) that sits
3.a person engaged to care for children when the parents are not home
4.a person who poses for a painter or sculptor
5.a domestic hen ready to brood
Idiom of the Day
from door to door
moving from one door to another
The children went from door to door to collect money for the earthquake victims.