testudo

testudo
[tɛˈstjuːdəʊ, -ˈstuː-]
(pl. testudostestudines -dɪniːz)
  1. (in ancient Rome) a screen on wheels and with an arched roof, used to protect besieging troops
    (古罗马用于保护攻城军队而装于车轮上的)穹形护顶
    ■a protective screen formed by a body of troops holding their shields above their heads in such a way that the shields overlap
    (由一队士兵举盾围成的)龟甲形连环盾
语源
  1. late Middle English: from Latin, literally 'tortoise', from testa 'tile, shell'
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