1. A track, clue, or hint that cannot be accessed or used at a given moment
The track is unavailable due to maintenance.
A pista está indisponível devido à manutenção.
2. In sports contexts (especially tennis or athletics), a playing surface that is not available for use
Court 3 is unavailable for the tournament.
A pista 3 está indisponível para o torneio.
3. Information or evidence that cannot be obtained or accessed
That clue is unavailable at this time.
Essa pista está indisponível no momento.