1. Something perceptible by one or more of the senses, especially by vision or touch; a material thing.
2. A focus of attention, feeling, thought, or action: an object of contempt.
3. The purpose, aim, or goal of a specific action or effort: the object of the game.
4. Grammar
   1. A noun, pronoun, or noun phrase that receives or is affected by the action of a verb within a sentence.
   2. A noun or substantive governed by a preposition.
5. Philosophy Something intelligible or perceptible by the mind.
6. Computer Science A discrete item that can be selected and maneuvered, such as an onscreen graphic. In object-oriented programming, objects include data and the procedures necessary to operate on that data.

1. To present a dissenting or opposing argument; raise an objection: objected to the testimony of the witness.
2. To be averse to or express disapproval of something: objects to modern materialism.

Synonyms: These verbs mean to express opposition to something, usually by presenting arguments against it. Object implies the expression of disapproval or distaste: "Freedom of the press in Britain is freedom to print such of the proprietor's prejudices as the advertisers don't object to" (Hannen Swaffer).
Protest suggests strong opposition, usually forthrightly expressed: The citizens protested against the tax hike.
To demur is to raise an objection that may delay decision or action: We proposed a revote, but the president demurred.
Remonstrate implies the presentation of objections, complaints, or reproof: "The people of Connecticut . . . remonstrated against the bill" (George Bancroft).
To expostulate is to express objection in the form of earnest reasoning: The teacher expostulated with them on the foolhardiness of their behavior. See Also Synonyms at intention.