A male first cousin of one's mother or father.

plural of second uncle

(politics) The second-most important city of a country or region.

plural of second leg

(sports, soccer) The second of the two matches or “legs” which are played between two teams in a two-legged tie. The winning team is usually determined by aggregate score, the sum of the scores of the two legs.

plural of second rate

plural of second wind

plural of second wave

plural of second party

(business, commerce) Of or related to the second party in a business or transaction.