ground floor   (TTS Sound)

The ground_floor has 2 Senses.

• ground level, ground floor, first floor
• the floor of a building that is at or nearest to the level of the ground around the building
• 建物の階で、周りの建物の地面と同じ、あるいは最も近い高さにある

• ground floor
• 階下
• becoming part of a venture at the beginning (regarded as position of advantage); "he got in on the ground floor"
• 最初はベンチャーに参加する（優位とみなされて）