noun
step stool; small stepladder
A physical object used to reach high places, such as a stool or small stepladder.
高い棚の物を取るために踏み台を使った。
I used a step stool to get something from the high shelf.
踏み台に乗って電球を交換した。
I stood on a small stepladder and changed the light bulb.
noun
Figurative use: a means to an end, often for career advancement or achieving a goal.
この仕事を踏み台にして、将来は独立したい。
I want to use this job as a stepping stone to become independent in the future.
彼はそのポストを出世の踏み台にした。
He used that position as a springboard for his career advancement.
Compound of 踏み (fumi, 'stepping', from verb 踏む) + 台 (dai, 'stand, platform').