drip tip

Noun

 * 1)  An elongated leaf tip from which excess water can drip off harmlessly, as found in plants of the rainforest.
 * 2)  An 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) An attachment for an e-cigarette that drips e-liquid directly onto the atomizer.