What does "captious" mean?

Captious: Fitted to harass, perplex, or insnare; insidious; troublesome. Captious restraints on navigation. Bancroft. -- Captious, caviling, Carping. A captious person is one who has a fault-finding habit or manner, or is disposed to catch at faults, errors, etc., with quarrelsome intent; a caviling person is disposed to raise objections on frivolous grounds; carping implies that one is given to ill-natured, persistent, or unreasonable fault-finding, or picking up of the words or actions of others. Caviling is the carping of argument, carping the caviling of ill temper. C. J. Smith.