Annual (6)
'annual' is the definition.
(I know that annual can be written as yearly)
This is all the clue.
(Other definitions for yearly that I've seen before include "Every 365 or 366 days" , "Approximately every 52 weeks" , "Annually" , "Annual periodical" , "Happening every twelve months" .)
'annual?' is the definition.
(I know that annual can be written as yearbook)
This is the entire clue.
(Other definitions for yearbook that I've seen before include "Almanac published annually" , "Annual almanac" , "Reference book, published annually" , "annual product" , "Annual publication" .)