1. 1a (single) slab of rock; a monolith
  1. 2〔強固なまとまり〕
    • この党は世間で言われるような一枚岩ではない
    • This party is not, as is generally believed, monolithic.
    • 一枚岩の団結を誇る組織
    • an organization boasting of ironclad solidarity