Definition of "roundhead" [roundhead]

• Describing the head of a screw that is dome shaped. (adjective)
• A roundhead screw, one with a domed head. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "Actually, I think that roundhead is actually ideologically a liberal."
• "'The roundhead is a gentleman, and would not, to save his life, have harmed thee, even had he known what a worthless thing thou art."
• "A nonentity calling himself "roundhead" has been buzzing around recently, making silly comments about me over at Daimnation, and depositing a flyspeck or two at my place."