in‧road [usually plural]

make inroads into/on something

a) to have an important effect or influence on something, especially by taking something away from it:
Video is making huge inroads into attendance figures at movie theaters (=taking away its customers).
They have made significant inroads into the European market.
The administrative workload is making massive inroads into our working day (=taking away time).
b) to make some progress towards achieving something difficult:
We haven't made much of an inroad into the backlog of work.

Dictionary results for "inroad"
Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.