even if one says

hidden treasure; treasured article

tradition / legend / folklore

to hide, to conceal

that which is hidden / that which is protected from outside / (clothing) pocket

an island (land surrounded by water) / one's domain, territory, turf

to say, to tell somebody / to call, to name, to give a name / to cry, to call, to make a noise (such as an animal)

in other words; what I (you, etc.) mean is

to startle; to surprise; to astonish

past tense and perfective aspect of 言う (iu, yū) [godan]