to and fro

moving from one place to another and back again; "he traveled back and forth between Los Angeles and New York"; "the treetops whipped to and fro in a frightening manner"; "the old man just sat on the porch and rocked back and forth all day"

उसकी आंखें चमकदार होती हैं और कान प्राय: इधर उधर फड़कते रहते हैं.

Its eyes are bright and ears frequently - pricking to and fro.