1.NounAn elongated leaf tip from which excess water can drip harmlessly, as found in plants of the rainforest.
2.NounAn elongated extension to the wall of a structure, such that unwanted water drips off, as found in the nests of some species of rainforest paper wasps.
3.NounAn attachment for an e-cigarette that drips e-liquid directly onto the atomizer.