From "Jo's Boys," by Louisa May Alcott...
'A true woman, and a born sailor's wife! You are a happy man, Emil, and I'm sure this trip will be a prosperous one,' cried Mrs Jo, delighted with the briny flavour of this courtship. 'Oh, my dear boy, I always felt you'd come back, and when everyone else despaired I never gave up, but insisted that you were clinging to the main-top jib somewhere on that dreadful sea'; and Mrs Jo illustrated her faith by grasping Emil with a truly Pillycoddian gesture.
What is a Pillycoddian gesture? Being that it's capitalized, it seems it must be a reference to something significant. If it helps, there are many references to Greek mythology in the book.