When a doctor orders laboratory tests, like blood tests for disease or for nutritional status, the doctor is the referring doctor: he refers the patient to the lab. In medicine, it approximately means sends, because the doctor is sending the patient to the lab, or other doctor, or . . .
Definitions for still waters run deep. Here are all the possible meanings and translations of the word still waters run deep. Wiktionary(0.00 / 0 votes)Rate this definition: still waters run deep(Proverb) A person with a calm appearance has, or may have, considerable inner emotion, character, or intellect.
It means that quiet people often have the deepest character. It's meaning was used literally when the saying was first made, then it meant that smooth waters are deep because the rocks aren't near the surface to disturb the water's surface. Now commonly used to assert that a placid exterior hides a passionate or subtle nature. Cf. [Q.