Definition
As an adjective, "second" refers to the item that immediately follows the first one in a sequence. It denotes a position in an ordered series, like the second place in a race. It can also mean another one; an additional item of the same kind, like asking for a second opinion. As a unit of time, it's a small fraction of a minute. You can also 'second' a motion, formally agreeing to it. ⏱️