1 [+tree, object] hueco; [+cheeks, eyes] hundido it's hollow (inside) está hueco (por dentro); his eyes were hollow tenía los ojos hundidos; she had a hollow feeling in her stomach tenía una sensación de vacío en el estómago; he felt hollow inside se sentía vacío por dentro; look how much you've eaten, you must have hollow legs! ¡qué barbaridad, lo que has comido! ¡debes de tener la solitaria!
2 [+gesture, laugh] falso; [+threat, promise] vano; falso; [+words] hueco; vacío; [+person, victory, success] vacío their marriage was a hollow sham su matrimonio era una pura farsa or pantomima; to ring or sound hollow sonar (a) falso
A declaration of support without action sounds pretty hollow
his denial has a hollow ring (to it) su negativa suena a falso
3 [+sound, noise] hueco ...the hollow sound of a gunshot
a deep, hollow voice whispered his name una voz profunda y cavernosa susurró su nombre; her voice sounded tired and hollow su voz sonaba cansada y apagada