sifflets

In a sentence

• Les spectateurs ont utilisé des sifflets pour exprimer leur désaccord.

  The spectators used whistles to express their disagreement.

  Here, 'sifflets' refers to physical objects, namely whistles, used to produce sound as a demonstration of opinion.

• Les sifflets des oiseaux résonnent dans la forêt au lever du soleil.

  The birds' whistles resound in the forest at sunrise.

  In this case, 'sifflets' metaphorically describes the whistling sounds produced by birds, highlighting natural phenomena.

• Le chef a ignoré les sifflets venant du public pendant son discours.

  The leader ignored the whistles coming from the audience during his speech.

  Here, 'sifflets' conveys the sharp sounds produced by whistling, often used as expressions of dissatisfaction from the crowd.