the world > movement > motion in a certain direction > going or coming in > go or come into [verb (transitive)] > by chance (3)
figurative in various uses. To come on or upon by chance and unexpectedly; to come in or into (a place) by chance.
intransitive. To reach or enter (a place), esp. by chance. Obsolete.
To ‘stumble’ or blunder into (a place).