gyōkaigan
1. tuff
Noun
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1. tuff
1. monolith; large slab of rock
2. unity (of a group, organization, etc.); unanimity
1. halite; rock salt
1. the industrial world
1. cavern; grotto
1. business world; business circles
1. solid; firm
1. rocky mountain
1. uncomfortable feeling; feeling out of place
2. malaise; physical unease
1. rock; boulder
2. crag