1. superlative form of glassy; most resembling glass in appearance, smoothness, or transparency
2. having a fixed, vacant, or expressionless stare; most glassy-eyed
Usage: informal

Examples

• The glassiest surface of the lake reflected the mountains perfectly.
• After the long flight, his eyes were the glassiest I'd ever seen.
• The glassiest finish on the ceramic tiles made them easy to clean.
• She stared with the glassiest expression, lost in thought.
• The glassiest part of the ice rink was near the center.
• His glassiest look suggested he hadn't slept in days.