Definition of hollow adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈhɒləʊ//
    ; NAmE NAmE//ˈhɑːloʊ//
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  1. 1  having a hole or empty space inside a hollow ball/centre/tube The tree trunk was hollow inside. Her stomach felt hollow with fear.
  2. 2(of parts of the face) sinking deeply into the face hollow eyes/cheeks hollow-eyed from lack of sleep
  3. 3[usually before noun] (of sounds) making a low sound like that made by an empty object when it is hit a hollow groan
  4. 4[usually before noun] not sincere hollow promises/threats a hollow laugh Their appeals for an end to the violence had a hollow ring.
  5. 5[usually before noun] without real value to win a hollow victory
  6. Word OriginOld English holh ‘cave’; obscurely related to hole.Extra examples His expressions of support rang rather hollow. I felt hollow from lack of food. I tapped the tin and it sounded hollow. She gave a slightly hollow laugh. His promise rang hollow. I’ve had enough of their hollow promises. Their appeal for an end to the violence had a hollow ring to it. a hollow ball/​centre/​tube/​tree hollow eyes/​cheeksIdioms to give the impression of being sincere/true or not sincere/true It may seem a strange story but it rings true to me.
See the Oxford Advanced American Dictionary entry: hollow