RPG Forums - BBM? Abbreviation has stumped me.

I consider myself knowledgeable on the Russian military compared to the average news reader but this has stumped me. By context clues I am assuming APC IFV or such but I am not sure (Given BTR and BMPs). Could be soft skin vehicles with the odd rule that sometimes everything with armor and a gun is a tank.

Quote:

Even context clues have failed me. - Raymond Holt

https://theprint.in/world/inflicted-...nistry/847024/

Quote:

“Deputy Minister of Defense of Ukraine Hanna Malyar informs: Estimated losses of the enemy as of 03:00 25.02.2022 Aircraft 7 units Helicopters 6 units Tanks – more than 30 units. BBM – 130 units. The loss of enemy personnel is approximately (to be specified) 800 people,” Ukraine’s Defense Ministry tweeted in Ukrainian.

https://kyivindependent.com/national...on-all-fronts/

Quote:

Russia lost 14 planes, 8 helicopters, 102 tanks, 536 BBM, 15 heavy machine guns, and 1 BUK missile since Feb. 24, according to Ukraine’s military.

It is not in this. (Frist google result to a reference material)
https://irp.fas.org/world/russia/sovmil-glossary.pdf

Any thoughts? Internal Ukrainian nomenclature perhaps as they all seem to come from casualty estimates from the Ukrainian govt/military