From Greek Καλυψω (Kalypso) which probably meant "she that conceals", derived from καλυπτω (kalypto) "to cover, to conceal". In Greek myth this was the name of the nymph who fell in love with Odysseus after he was shipwrecked on her island of Ogygia. When he refused to stay with her she detained him for seven years until Zeus ordered her to release him.