Thick on the ground - Idioms by The Free Dictionary
thick on the ground
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thick on the ground BRITISH
If people or things are thick on the ground, there are a lot of them. As buyers are not thick on the ground at the moment, this could be a good time to get a good deal. Jobs are not exactly thick on the ground in these parts.
thick (or thin) on the ground existing (or not existing) in large numbers or amounts.
thick/thin on the ˈground (British English) if people or things are thick/thin on the ground, there are a lot/not many of them in a place: Customers are thin on the ground at this time of year. ♢ Good science teachers are thin on the ground.