Definition of keep an eye on in English:

keep an eye on

phrase

  • Keep under careful observation.

    ‘dealers are keeping an eye on the currency markets’
    • ‘Observers said investors should keep an eye on the operating profit excluding the charge.’
    • ‘Our Highways Department keeps an eye on the bridge and checks it every week, using jetting equipment to keep it clear.’
    • ‘Many members enjoy working out and then relaxing in the hydrotherapy area, but now we will have no choice but to keep an eye on our watches.’
    • ‘I always wear a heart-rate monitor and I keep an eye on my heart rate all the time.’
    • ‘These observers keep an eye on all the activities and make sure that people stay safe.’
    • ‘Observers of politics also kept an eye on individuals who might emerge as candidates to be Prime Minister.’
    • ‘As part of a recent study, pupils are keeping an eye on a freshly picked daffodil which has begun to turn blue.’
    • ‘With it you can set up a camera, keep an eye on whatever needs watching and capture images at will.’
    • ‘They are much easier to observe, infiltrate & generally keep an eye on when they are in the open.’
    • ‘The doctors keep an eye on the size of the tumour and for now it's okay.’