n. One who pitches, n. In coal-mining, one who attends to loading at the shaft or other place of loading.n. A vessel with an open spout and generally with a handle, used for holding water, milk, or other liquid.n. In botany, a specially adapted tubular or cupshaped modification of the leaf of certain plants, particularly of the genera Nepenthes and Sarracenia; an ascidium. See ascidium, pitcherplant, Nepenthes, and Sarracenia.