The story
Genericized trademark, from the inverted Y-shaped seams at the front.
Etymology from Wiktionary, CC BY-SA 4.0.
Y-fronts
Today it means: Briefs that have a fly as part of an inverted Y formed by the seams. Full definition →
Today it means: Briefs that have a fly as part of an inverted Y formed by the seams. Full definition →
Genericized trademark, from the inverted Y-shaped seams at the front.
Etymology from Wiktionary, CC BY-SA 4.0.