fasten
US /ˈfæs.ən/
UK /ˈfæs.ən/

1.
2.
fijar, concentrar
to direct one's eyes or attention steadily or intently toward something
:
•
He fastened his gaze on the distant ship.
Él fijó su mirada en el barco distante.
•
Her attention was fastened on the speaker.
Su atención estaba fija en el orador.