To search (for something).
To look sullen or sad; scowl, frown.
To look (at), to stare (at).
To grasp or snatch (at), usually feebly or ineffectually; to grope (at) with the hands, as in the dark.
To search for something in a similar manner.
To rummage; to look for something in a somewhat aimless fashion.
To forage by poking the snout here and there.