Rhymes with "Too Boss".
From Kurt Vonnegut's "Cat's Cradle": "– a karass of only two people, who almost always die within a week of each other. The typical example is a loving couple who work together for a great purpose."
From Kurt Vonnegut's "Cat's Cradle": "A group of people linked in a cosmically significant manner, even when superficial linkages are not evident."