Rare Waterford glass shape, cannot identify

Hi. I have these rare Waterford, Lismore pattern I believe, glasses from my Mom's collection. They were acquired between 1975 and 1990, possibly in Ireland. I have researched this online extensively, and I have never seen this shape in photos, or read a description. I'm thinking Martini, or Cocktail, but finding nothing. If anyone knows what this glass shape is, or what it is called, I would really appreciate learning from you! Many thanks, Chris