waterer noun4 •One who waters plants.She has dabbled in jobs as various as plant-waterer for a garden centre, trackwork rider for a racehorse trainer and librarian's assistant […] — 2007 •A device used for watering.She installed an automatic waterer for her garden. •A device from which livestock, poultry, or pets may drink.Clean the chicks' waterer each time you refill it. •One who waters down, or dilutes, something. formswaterers
