Posy/ˈpəʊzi/ Definition 1 of 2Pro Tip 1/3Common Gift Posies are often given as a thoughtful and affectionate present. He surprised her with a posy to cheer her up. Pro Tip 2/3Size Matters A posy is usually smaller than a bouquet, making it easy to carry. For the flower girl, we chose a tiny posy that fit perfectly in her hands. Pro Tip 3/3Wedding Accessory In weddings, posies are commonly used by bridesmaids and flower girls. The bridesmaids each carried a delicate posy down the aisle.