You can search Bangla-Tangla's dictionary along with Samsad's Bengali-English Dictionary and Bangla Abhidhan using this mobile-friendly search page:

Search three dictionaries

This dictionary system has some unique features:

Samsad Dictionaries

The excellent Samsad dictionaries are hosted by Digital Dictionaries of South Asia (DDSA) (see the links Biswas-Bengali and Biswas-Bangala). Bangla-Tangla provides an alternative interface to them here in order to address the following issues:

If you find the Samsad dictionaries useful online, please support Samsad and buy a hardcopy at your local bookstore. In any case, the online version at UChicago has a lot of missing and garbled entries so you'll need to look those up the old-fashioned way.