Lewis Short
gĕmursa (noun F) : Gr. γέμω, to be full; cf. gemo
* A small swelling between the toes (ante-class.): morbus, quem gemursam appellavere prisci, inter digitos pedum nascentem,Plin. 26, 1, 5, § 8; cf.: gemursa sub minimo digito pedis tuberculum, quod gemere faciat eum, qui id gerat, Paul. ex Fest. p. 95 Müll.
Charlton T. Lewis, Charles Short, A Latin Dictionary