noun
read-write head
Computing term for the component in a disk drive that reads and writes data.
ハードディスクの読取り書込みヘッドが故障した。
The hard disk's read-write head has failed.
Compound of 読取り (yomitori, 'reading') + 書込み (kakikomi, 'writing') + ヘッド (heddo, 'head'), a calque of English 'read-write head'.