A region whose eastern part is now Bangladesh and whose western part is included in India WordNet 3.0 & Open English WordNet

Bengal is a geopolitical, cultural and historical region in South Asia, specifically in the eastern part of the Indian subcontinent at the apex of the Bay of Bengal, predominantly covering present-day Bangladesh and the Indian state of West Bengal. Wikipedia

Region in South Asia. Wikipedia Disambiguation

Historical and geographical region in the east region of the Indian subcontinent Wikidata

A region in the Indian subcontinent which is today divided between Bangladesh and India (particularly the state of West Bengal). Wiktionary