is limit a reserved keyword?

I have a piece of commercial software that does a query like so:
CREATE TABLE chargelimits (id int NOT NULL, user_id int NOT NULL, limit
float NOT NULL )
but the postgresql 7.0 gives a parse error near "limit".
Is limit a reserved keyword?
If so, then it is not in the list of reserved keywords.
Is there a way that I can make this query run without altering it?

Thanks
Gabriel Russell
g.russell@ieee.org