Necessary items or essentials required for daily life or a particular activity.
旅行の必需品はパスポートと現金、着替えだ。
Travel essentials are your passport, cash, and a change of clothes.
冬の登山では防寒具が必需品になる。
In winter mountain climbing, warm clothing becomes essential.
新生活を始めるとき、家具は大きな必需品だ。
When starting a new life, furniture is a major necessity.