male columnist
A somewhat dated or niche term for a male newspaper or magazine columnist, formed from コラム (column) + 子 (a suffix often used in pen names or nicknames).
He has been active for many years as a columnist for the local paper.
Compound of コラム (column) and 子 (a suffix often used in pen names or nicknames, here indicating a male person). The exact origin is uncertain, but it likely emerged as a playful or insider term in Japanese journalism.