walk-in-clinic

a place where you can get help when you don't have a family doctor, or when you can't get an appointment with your family doctor

walk-in-clinics are not for medical emergencies

warning sign

signals that something may be wrong, for example pain or a fever

wean

to get a child used to food other than its mother's milk 

stop slowly

slowly decrease the use of technological support

wheeze

a course whistling sound when you breathe

white blood cells (WBC)

one of the cells your body makes to help fight infection. A blood test can measure your white blood cells

whooping cough (pertussis)

disease of your lungs

a disease caused by bacteria that infects your lungs and airways. Pertussis causes serious coughing fits that can lead to choking or vomiting. The coughing can be so intense that a “whooping” sound happens when an infected person tries to catch his or her breath. This is why pertussis is commonly known as whooping cough

withhold

deny, keep from, hold back

withstand

take, bear, resist

witness

see, note, observe