Gräfenberg spot

[ graf-uh n-burg, gref- ]
/ ˈgræf ənˌbɜrg, ˈgrɛf- /

noun

a patch of tissue in the front wall of the vagina, claimed to be erectile and highly erogenous.
Also called G spot, G-spot.

Origin of Gräfenberg spot

1980–85; after German-born gynecologist Ernst Gräfenberg (1881–1957), who is credited with first descibing it