All 5 Uses

covert
in
The Light of Western Stars
(Auto-generated)

His eyes were covertly upon her.†
Chpt 7 *
Don Carlos, who had been covertly watching them, now made his scrutiny open, even aggressive.†
Chpt 19
The cowboys evinced their interest in covert glances while recoiling a lasso or while passing to and fro.†
Chpt 5
Madeline divined the covert meaning, and a slight chill passed over her, as if a cold wind had blown in from the hills.†
Chpt 9
Nevertheless, she stood rooted to her covert behind the window, living that terrible walk with him to the uttermost thought of home, sister, mother, sweetheart, wife, life itself—every thought that could come to a man stalking to meet his executioners.†
Chpt 25

Definitions:

(1) (covert as in: a covert plan)
done in a secret or hidden way
(2) (meaning too rare to warrant focus)
Much more rarely, covert is used as a noun to describe a hidden or sheltered place. Coverts can refer to the small feathers that cover the base of a bird's flight feathers.