hawk-eyed

He was hawk-eyed, square-built, very red-faced, with an eye anything but expressive of saintly life.

“He—he shot him,” Cordie gulped, pointing away toward the hawk-eyed man.

And that man, that hawk-eyed man—” she shuddered, “must have recognized me.

With all their silence and caution, however, the poor trappers cannot always escape their hawk-eyed enemies.