What does 'loose' mean?

[Hubbard]

English Error, Elementary Level

ESL/EFL Test #16 "Where are my Glasses?", question 10

She put her hand on the chair and to her delight she found her long loose glasses.

(a) put
(b) found
(c) loose

English Error, Elementary Level

ESL/EFL Test #16 "Where are my Glasses?", answer 10

She put her hand on the chair and to her delight she found her long lost glasses.

Correct entry: lost
The error was: (c) loose
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What does it mean "loose"?

Hubbard

[Mister Micawber]

.
LOOSE
.
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Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber