We don't have synonyms for fitchet yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are fitchew, fitched and fitches.
(n) :
(historical) A vertical slit at the hip of a gown, robe, cotehardie, surcoat, or similar overgarment, through which hands may pass, either to lift the gown while walking, or to allow access to a pouch or belt worn underneath for security. Also known as a "pocket slit". Also may be spelled "fichet".
(n) :
(historical) A vertical slit at the hip of a gown, robe, cotehardie, surcoat, or similar overgarment, through which hands may pass, either to lift the gown while walking, or to allow access to a pouch or belt worn underneath for security. Also known as a "pocket slit". Also may be spelled "fichet".