| Definition/Meaning | Word/Phrase |
|---|---|
| gastritis caused by ingesting an irritant (as too much aspirin) | acute gastritis |
| digitate-leaved hellebore with an offensive odor and irritant qualities when taken internally | bear's foot , Helleborus foetidus , setterwort , stinking hellebore |
| European strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy | herb of grace , rue , Ruta graveolens |