1. having a head shaped like an egg; bald or nearly bald
Usage: informal; descriptive
2. intellectually pretentious or pedantic; acting like an egghead
Usage: informal; derogatory

Examples

• The old professor had an eggheaded appearance with his smooth, round scalp.
• He made an eggheaded comment about quantum physics that nobody understood.
• She dismissed his eggheaded theories as impractical and disconnected from reality.
• The eggheaded intellectual spent hours debating obscure philosophical points.
• His eggheaded remarks at the meeting made everyone roll their eyes.