medicine box; first-aid kit
A box or case for storing medicines and first-aid supplies.
I took a bandage out of the medicine box.
Standard kanji spelling.
Mixed kana-kanji spelling; less common but still seen.
Compound of 薬 (くすり, 'medicine') and 箱 (はこ, 'box'), with rendaku voicing of はこ to ばこ.