Definition of check on
- The nurse checked on the patients regularly.
- The police are checking on him.
- I asked the waiter to check on my order.
: exposure of a chess king to an attack from which he must be protected or moved to safety
: a sudden stoppage of a forward course or progress : arrest
: a checking of an opposing player (as in ice hockey)
: to put (a chess king) in check
: rebuke, reprimand
: to slow or bring to a stop : brake
used to express assent or agreement
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