(v. t.) To do reconnaissance; to make a preliminary examination for military or geological purposes\.

be vigilant be watchful bug case course cover do eye eyeball follow gaze at go over have a looksee hold in view keep in sight keep in view keep under observation look after look at look on look upon make a reconnaissance measure observe overpass pass over pass through patrol peep perambulate peregrinate pererrate play the spy ply probe put under surveillance range range over regard scour scour the country scout scout out spy spy out spy upon stake out sweep track transit travel over travel through traverse view voyage watch