「飲み物」 (nomimono) means "drink" or "beverage." It refers to anything liquid that people or animals drink. You use 「飲み物」 to talk about water, juice, tea, coffee, etc. For example, 「何か飲み物はいかがですか？」 (Would you like something to drink?)

人が飲む液体のことです。水やお茶、ジュースなどがあります。