Test incompl/inter-347, User's Answer 6

English Language Tests, Intermediate level

ESL/EFL Test #347 [color=blue]“English Slang Idioms (68)”, question 6

“If we get that grant that you applied for, that will be a major in your cap. The boss is going to be very thankful,” Linda said to Derek.

(a) patch
(b) update
© button
(d) feather

English Language Tests, Intermediate level

ESL/EFL Test #347 [color=blue]“English Slang Idioms (68)”, answer 6

“If we get that grant that you applied for, that will be a major feather in your cap. The boss is going to be very thankful,” Linda said to Derek.

Correct answer: (d) feather

Your answer was: [color=red]incorrect
“If we get that grant that you applied for, that will be a major patch in your cap. The boss is going to be very thankful,” Linda said to Derek.
[size=200]_________________________[/size]

Does to be major feather in one’s cap mean that it is the highlight of one’s doing something or anything at large?