contact poison

https://doi.org/10.1351/goldbook.15593
  1. Chemical that injures the target organism through physical contact and skin absorption rather than through ingestion or inhalation.
  2. Pesticide (herbicide) that causes injury to only the plant tissue to which it is applied or which is not appreciably translocated within plants.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1196 [Terms] [Paper]