obligatory stamp
stamps that must be affixed to all mail at certain times for various reasons (support after disasters, as a form of war tax, etc.); usually only on domestic letters, etc.
Pronunciations
British English
/əˈblɪɡətɹɪ ˈstæmp/Open converterAmerican English
/əˈblɪɡəˌtoʊɹi ˈstæmp/Open converter
These IPA transcriptions are generated from the name above. Proper names may have other pronunciations, and current converter results may differ. How transcription works