We don't have synonyms for pillock yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hillock, pollock and killock.
°In some parts of Yorkshire (England) a pillock is a large sharpening stone for a sickle, presumably named because of its resemblance to a penis, and the heavy Norwegian influence to the Old Yorkshire dialect.
°In some parts of Yorkshire (England) a pillock is a large sharpening stone for a sickle, presumably named because of its resemblance to a penis, and the heavy Norwegian influence to the Old Yorkshire dialect.