πύκασμα
From LSJ
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται → For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
English (LSJ)
ατος, τό,
A that which is close, covered, or thick, Sm.Ps.117(118).27.
German (Pape)
[Seite 815] τό, das Dicht- od. Festgemachte, Sp.