the trioxide of arsenic.
rat poison, esp arsenic oxide
“rat poison, arsenic,” 1520s; see rat (n.) + bane.
/ˈraːtskɛlər/ noun 1. the cellar of a town hall, esp one used as a beer hall or restaurant 2. any similar establishment, esp in the US
noun 1. any of several New and Old World colubrid snakes, of the genus Elaphe, that feed chiefly on small mammals and birds. noun 1. any of various nonvenomous rodent-eating colubrid snakes, such as Elaphe obsoleta of North America and Ptyas mucosus of Asia
- Rat someone out
verb phrase To betray or inform on someone; RAT ON someone: My little brother ratted me out, though (1990s+)
[rat-teyl] /ˈrætˌteɪl/ noun 1. (def 4). noun 1. another name for grenadier (sense 2) 2. 3. a style of spoon in which the line of the handle is prolonged in a tapering moulding along the back of the bowl 4. a kind of woodworking or metalworking file n. also rat’s-tail, used since 16c. of conditions […]