释义 |
bur oak noun[ C ] (alsoburr oak)uk /ˈbɜːr ˌəʊk/ us /ˈbɝː ˌoʊk/ a large deciduous tree (= one that loses its leaves in autumn and grows new ones in the spring) that is found in North America and has acorns (= oval nuts that have an outer part shaped like a cup): The cups of the bur oak's acorns wrap around most of the nuts. The bur oak and the white oak are the most common types of oak in the state. The 250-year-old bur oak is almost 50 metres tall. The number of bur oaks in the county is dwindling. There is a statuesque spreading burr oak in the churchyard. SMART Vocabulary: related words and phrases Deciduous trees acacia acer ailanthus alder almond ginkgo hawthorn honey locust hornbeam horse chestnut quaking aspen red maple red oak rowan rubber tree wayfaring tree weeping willow white ash white birch white oak |