Definitions
1.nounA person or thing considered to be defective.
2.adjectiveHaving one or more defects.
3.adjective(grammar, of a lexeme, especially a verb) Lacking some forms; e.g., having only one tense or being usable only in the third person.
4.adjective(Arabic grammar, of a verb) Having a root whose final consonant is weak (ي, و, or ء).