stramenticios

[jacktthekilns]

I'm a little confused by this word from Harrius Potter. I know it means made of straw. it is the -iciōs (presumably -icius in nom m s) I can't seem to find a reference to this suffix. I am aware of -icus is -icius just an alternative form?

 

[Agrippa]

My interpretation: petasus stramenticius nomine lintrarius = a straw boater, cf. https://gambleandgunn.com/british-made-boaters-last/

acc.plur.: petasos stramenticios nomine lintrarios

 

[Agrippa]

Addendum:

vespere illius diei, Dudley habitum novissimum familiae in
sessorio ostendit, discipuli scholae Smeltings vestes caudatas
colore purpureo gerebant, bracas solutas transatlantici generis
luteo colore, petasos planos et stramenticios nomine lintrarios