ἀγκύλωσις
From LSJ
Ποιητὴς, ὁπόταν ἐν τῷ τρίποδι τῆς Μούσης καθίζηται, τότε οὐκ ἔμφρων ἐστίν → Whenever a poet is seated on the Muses' tripod, he is not in his senses
English (LSJ)
ἡ, as medic. term,
A tongue-tie, Antyll. ap. Orib.46.16.4; stiffening of joints, Paul. Aeg.4.55; adhesion of the eyelids, Gal.14.772.