This is the 9436th most frequent Japanese word.
積もり
"積もり" means "intention" or "plan."
Here, '積もり' is used as a verb to indicate accumulation.
雪がたくさん積もりました。
A lot of snow has piled up.
In this sentence, '積もり' signifies 'intention' or 'target.'
あの時の積もりで計画を進めます。
We proceed with the plan based on the intention at that time.
The use of '積もり' reflects compounded intent or effort in this context.