- The definition of inroad is a raid or a step forward.
- An example of an inroad is when you feel as if you are finally making progress with your mother-in-law who doesn't like you and that you are getting her to warm up to you a bit.
- An example ofan inroad is when a military group successfully seizes a fort that belonged to its opposition through a violent attack.
- a sudden invasion or raid
- any advance; esp., an intrusion or encroachment: usually used in pl.
Origin: in- plush road (in obsolete sense of “riding”)
Used by arrangement with John Wiley & Sons, Inc.
- A hostile invasion; a raid.
- An advance, especially at another's expense; an encroachment. Often used in the plural: Foreign products have made inroads into the American economy.
Origin: in1 + road, riding, raid (obsolete).