From Longman Dictionary of Contemporary Englishon either/every handon either/every handwritten on both sides or in every direction Thick forest stood on either hand. → hand
Examples from the Corpus
on either/every hand• Ancient oak gave place to modern pine forest on either hand.• Gaston was a fishmonger who left evidence of his occupation on every hand he shook.• Mist curled from the water on either hand.• The drive is spectacular: gorges and tropical rain forests and waterfalls on every hand, but I thought only of Poppy. 