Definition of Noah's ark
1 less commonly Noah's ark shell : ark shell; especially : a common ark shell (Arca noae)
2 : a series of straight parallel narrow bands of cloud that by perspective appear to spring from common points on opposite sides of the horizon and to arch and spread apart as they approach the zenith
3 : a set of toys representing Noah's ark and the animals in it
4a : lady's slipper 1 b : a monkshood (Aconitum napellus)
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Origin and Etymology of noah's ark
so called from the supposed similarity to Noah's ark (Genesis 6:14–20)
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