Is there a native, non-loanword for "pen" (the writing instrument)? Or is there only 「ペン」?
There is one for "pencil" (鉛筆), one for "ruler" (定規), one for "paper" (紙) and even though the one for "eraser", 消しゴム, is half loanword due to the ゴム, at least there is an alternative to the full loanword イレーザー. It would be weird if there is no native word for "pen".
字消し, although it is slightly old-fashioned. – sawa Dec 25 '11 at 20:43