Read the dictionary definition of chad. All definitions for this word.
1. a family of Afroasiatic tonal languages (mostly two tones) spoken in the regions west and south of Lake Chad in north central Africa
2. a landlocked desert republic in north-central Africa; was under French control until 1960
3. a lake in north central Africa; fed by the Shari river
4. a small piece of paper that is supposed to be removed when a hole is punched in a card or paper tape