what is the meaning of defective?

[Irmaz]

English Language Tests, Intermediate level

ESL/EFL Test #730 "Real Life: Returns and Refunds (1)", question 1

I just bought a new CD player the other day but it's ......... so I'm going to take it back tomorrow.

(a) contracted
(b) defective
(c) ideal
(d) flawless

English Language Tests, Intermediate level

ESL/EFL Test #730 "Real Life: Returns and Refunds (1)", answer 1

I just bought a new CD player the other day but it's defective so I'm going to take it back tomorrow.

Correct answer: (b) defective
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what is the meaning of defective?

Irmaz

[Mister Micawber]

Don't you have a DICTIONARY, Irmaz?
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Native English teacher at Mister Micawber's