Trix
From Simon Online
Trix trichos grece capillus.
Apparatus:
Trix ABC e | Trhis f
trichos ACD | tricos B e | thrices f
Translation:
Trix, genitive trichos, is Greek for Latin capillus {"hair"}.
Commentary:
θρίξ /thríx/, gen. τριχός, /trikhós/ means "hair”.
Simon as an Italian would have pronounced theta, i.e. Θ,θ, like /t/, hence his transcription trix. This contrasts with Greek speakers, who did then as they do now pronounce it like the "th" sound in English "thrift".
See also: Triches