pto ‧ maine /ˈtəʊmeɪn, təʊˈmeɪn $ ˈtoʊmeɪn, toʊ-/ BrE AmE noun [uncountable and countable]
[ Date: 1800-1900 ; Language: Italian ; Origin: ptomaina , from Greek ptoma 'fall, fallen body, dead body' , from piptein 'to fall' ]
a poisonous substance formed by ↑ bacteria in decaying food