objection-n; 3 Senses

Sense Number 1: the act of protesting, dissenting

Commentary: OBJECTION[+action][+communication][+protestation]
NOTE: refers to a speech act, an instance of communication
NOTE: does not refer to the reason for the protest (Sense 2), but the act of protesting.
NOTE: doesn't occur naturally with quantifiers.

The crowd's objections to the umpire's call were loud and rude.
John has practiced conscientious objection to military service his entire adult life.
Mary's objection to her boss's treatment of his secretary almost got Mary fired.

WordNet 3.0 Sense Numbers: 2, 3

Sense Number 2: the reason or rationale for disagreeing

Commentary: OBJECTION[+relation][+rationale][+dissent]
NOTE: refers to the reason for dissent or protest, not the -act- of doing it (Sense 1)
NOTE: occurs usually as 'OBJECTION BE X', 'OBJECTION SEEM X' i.e, the objection is further predicated or elaborated
NOTE: occurs naturally with quantifiers, 'X's one objection' 'few objections'

The customer's objections to the revised user interface seem pretty vague.
This report has tried to address all the objections raised about possible noise pollution.
Bob's only objection to Mary's promotion to manager was that she is not a good

WordNet 3.0 Sense Numbers: 1

Sense Number 3: legal protocol to challenge inquiries during a court proceeding

Commentary: OBJECTION[+action][+communication][+challenge][+legal]

The prosecutor's objection was sustained by the judge.
The defense's line of questioning encountered frequent objections, usually overruled.

WordNet 3.0 Sense Numbers: 4