còi

còi
noun
  1. a whistle (device used to make a whistling sound)
  2. a horn (loud alarm, especially on a motor vehicle)
  3. a siren (device for making a sound alarm)

adj
  1. (colloquial) skinny; bony

côi

côi
adj
  1. (rarely used alone) orphaned, abandoned

prep
  1. (North Central Vietnam) on; above

孤

孤