Meaning of DEFECTIVE in English

DEFECTIVE

de ‧ fec ‧ tive /dɪˈfektɪv/ BrE AmE adjective

not made properly, or not working properly SYN faulty :

The disease is caused by a defective gene.

defective products

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.