 A 2008 revision of the Oxford Junior Dictionary, a reference book aimed at children ages 7 to 9, removed 50 words including minnow, mussel, ferret, wren, bloom, sycamore, heron, beaver, lark, magpie, bluebell, buttercup, carnation, clover, crocus, dandelion, lavender, pansy, tulip, violet, and blackberry.