[ 'trɛʃə , 'trɛs(j)ʊə ]
■ noun
1》 Heraldry a thin border inset from the edge of a shield, narrower than an orle and usually borne double.
2》 an ornamental enclosure formerly found on some coins.
Origin
ME (denoting a ribbon or band for the hair): from OFr. tressour (see tress ).