Meanings
nounseamhead (plural seamheads)
plural seamheads
- slangA devoted baseball fan.
But the sport is an old flame for romantic types, as proved by numbers even sabermetric lords can wrap their seamheads around.
2007 October 15, Selena Roberts, “Football Is Booming at Baseball’s Expense”, in New York Times1 more example
He was a baseball lifer, a seamhead through and through, who just absolutely liked nothing better than sitting down and talking baseball.
2018, Adrian Dater, 100 Things Rockies Fans Should Know & Do Before They Die
Origin
From seam + -head, referring to the distinctive seam on a baseball.
Full word history & related roots →Cite this entry
APA
seamhead. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/seamhead
MLA
“seamhead.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/seamhead. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “seamhead,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/seamhead.
Source: seamhead on Wiktionary, CC BY-SA 4.0.