DEFECTIVE (2)

De‐fect″ive (?), n. 1. 1. Anything that is defective or lacking in some respect.
2. 2. (Med.) One who is lacking physically or mentally.
☞ Under the term defectives are included deaf-mutes, the blind, the feeble-minded, the insane, and sometimes, esp. in criminology, criminals and paupers.