The question asks for the meaning of the word "veteran." To solve this, we will examine each of the options provided to find the correct definition.
From the analysis above, the correct answer is 'A person who has long experience.' This matches the widely accepted meaning of "veteran," indicating a person who is experienced and seasoned in a particular field.

Pick the appropriate meaning of the term 'proscribe' used in the following sentence :-'Arms culture should be proscribed by the government.'