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Definition of 'tongue depressor'. tongue depressor (tÊÅ dÉªprÉsÉr ) Word forms: tongue depressors. countable noun. A tongue depressor is a medical instrument that is used to press a patient's tongue down so that their mouth or throat can be examined more easily. [medicine] Dr. Avery took the tongue depressor out of Rae's mouth.
A depressant, or central depressant, is a drug that lowers neurotransmission levels, which is to depress or reduce arousal or stimulation, in various areas of the brain. Depressants are also occasionally referred to as downers as they lower the level of arousal when taken.