used of the second year in United States high school or college
1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites
an indefinitely short time
the fielding position of the player on a baseball team who is stationed near the second of the bases in the infield
a period of time containing 365 (or 366) days
a period of time occupying a regular part of a calendar year that is used for some particular activity
the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun
a body of students who graduate together
