blazer

‘blazer’ (English/Dutch)

niet-gevoerd sport­jas­je (oor­spron­ke­lijk in de club­kleu­ren), soms met gro­te blin­ken­de kno­pen

(Van Dale)

1. a coloured jacket worn by schoolchildren or sports players as part of a uniform:
‘one supermarket offered a school blazer for just £10’
1.1 a plain jacket not forming part of a suit but considered appropriate for formal wear:
‘the actress donned a black v-neck top which she paired with a matching blazer’

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