Wordnet 3.0
NOUN (2)
1.
an exorbitant price;
- Example: "what they are asking for gas these days is highway robbery"2.
robbery of travellers on or near a public road;
The Collaborative International Dictionary of English v.0.48:
Highway robbery \High"way` rob"ber*y\, n.
1. Robbery committed on the public roads.
[PJC]
2. An excessively high price or fee; -- used especially in
situations where the buyer has little or no choice but to
buy the item offered.
[PJC]
WordNet (r) 3.0 (2006):
highway robbery
n 1: an exorbitant price; "what they are asking for gas these
days is highway robbery"
2: robbery of travellers on or near a public road