保蔵 is read as ほぞう (hozou) and means storage.
ほぞう
hozou
れいぞうほぞん
chilled storage
ほいくじょ
nursery school
もつ
to last
ほけんじょ
animal shelter
ほしょう
guarantee
ほする
to guarantee
ほあん
Hōan era (1120.4.10-1124.4.3)
ほご
preservation
ほしゅ
maintenance
ほけん
health education (school subject)
insurance
ほぞん
saving (e.g. to disk)