From Longman Dictionary of Contemporary Englishwatering canˈwatering can noun [countable] 
DLGa container used for pouring water on garden plants
DLGa container used for pouring water on garden plantsExamples from the Corpus
watering can• Water in the compost, using a fine rose on a watering can trying to avoid disturbing the surface too much.• I dilute the fertilizer in my watering can and sprinkle it over plants and soil.• He waited for her to pass by the porch window with the watering can.• The watering can was gritty metal with an ugly snub spout. 