The most common and most likely answer to this crossword clue is the 7 letter word ALMANAC
I've seen this crossword clue in The Times
A
L
M
A
N
A
C
More clues leading to the result ALMANAC
- Book of dates and times kept by signalman accurately
- Calendar girl initially nude and clothed
- Gangster and idiot — one's not kept a diary
- From local man, a city annual
- Annual volume of a transport route crossing motorway roundabout
- A cutting sent back about male calendar
- Annual battle in the Crimea may return
- The woman can return annual workbook
- Annual bill settled by Rushdie, heading off
- Annual account about chap in Los Angeles
Buddy explains!

The straight part
We know that "Yearbook" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case yearbook = almanac.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ALMANAC mean?
ALMANAC noun- A book or table listing nautical, astronomical, astrological or other events for the year; sometimes, but not essentially, containing historical and statistical information.
- A handbook, typically published annually, containing information on a particular subject
- A GPS signal consisting of coarse orbit and status information for each satellite in the constellation.