pino-, pin- (Greek: a combining form confused between three Greek roots and may mean "hunger", "dirt", or "drink"; and there is one Latin form referring to the "pine tree").

pinotherapy [Greek, "hunger"]: The treatment of disease by restricting food intake.

pinocyte, pinocytic, pinocytosis, pinocytotic [Greek, "drink"]: The inbibition [drinking]; of liquids by cells; i.e., absorption of liquids by cells, especially the mechanism by which cells ingest extracellular fluid and its contents.

pinosome [Greek, "drink"], any of the small fluid-filled vesicles [a small bladder or sac containing liquid] found in the cytoplasm during pinocytosis.