Wordnet 3.0
NOUN (1)
1.
a tax on various goods brought into a town;
The Collaborative International Dictionary of English v.0.48:
Octroi \Oc`troi"\, n. [F.]
1. A privilege granted by the sovereign authority, as the
exclusive right of trade granted to a guild or society; a
concession.
[1913 Webster]
2. A tax levied in money or kind at the gate of a French city
on articles brought within the walls.
[1913 Webster] [Written also octroy.]
[1913 Webster]
WordNet (r) 3.0 (2006):
octroi
n 1: a tax on various goods brought into a town