1) Bacterial toxin 2) Bioarm 3) Biological weapon 4) Bioweapon 5) Botulinus toxin 6) Botulismotoxin 7) Can be used as a bioweapon 8) Toxin in spoiled food Found on https://www.crosswordclues.com/clue/botulin
<protein> A very strong poison which affects the nervous system, made by the bacteria Clostridium botulinum. The poison causes the food poisoning known as botulism. ... (09 Oct 1997) ... Found on http://www.encyclo.co.uk/local/20973
botulin A highly active neurotoxin sometimes found in imperfectly preserved or canned meats and vegetables; it is produced by Clostridium botulinum and is peculiar in that it resists the action of the gastric juices. Found on http://www.wordinfo.info/words/index/info/view_unit/314/