I tried to spot exactly what row she was in.

Try to spot which of the four or five known activities it is.

He was always late in trying to spot the persons watching him.

He cast back over the last few hours, trying to spot it.

With each stop he looked around and tried to spot anyone paying over much attention to his presence.

My eyes hurt as I tried to spot the point at which they appeared out of the air.

I looked into the black water again, trying to spot the bottom.

His head turned this way and that as he tried to spot the man.

I was trying to spot the light of the fire.

The results didn't agree, so I tried to spot some stars to help me.