| 单词 | bird grass |
| 释义 | bird grass in American English US Dialectal 1. rough bluegrass 2. knotgrass bird grass in American Englishnoun 1. a grass, Poa trivialis, grown in temperate regions of North America largely for lawns and turf 2. the knotgrass Polygonum aviculare Word origin [1775–85, Amer.]This word is first recorded in the period 1775–85. Other words that entered Englishat around the same time include: Americanism, alto, backfire, guideline, waltz |
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