Dictionary

An intermediate person or means; intermediary.

(of goods) Not new; previously owned and used by another.

(of a dealer) Dealing in such merchandise.

Indirect; from a secondary source; not firsthand.

(of cigarette or cigar smoke) inhaled from the air near someone else smoking.

Example: exposure to secondhand smoke from cigarette-smoking colleagues

On a clock or watch, the hand or pointer that shows the number of seconds that have passed.