A person considered to have been born on a cusp between significant generations
2004 - Linda A Panszczyk - HR How-To--Intergenerational IssuesWhen the younger of their two overlapping generations feels like it's not being heard, a Cusper can provide a voice.
(astrology) A person born on a day at a junction of star signs
1989 - Liz Greene - Astrology for LoversAnd if you were bom on those tricky days which fall between two signs — like 23 December, or 21 May — then you are called a 'cusper', ...