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body clock

body clock

 
pronunciation:
ba di klak
part of speech: noun
definition 1: (non-technical) the internal mechanisms that regulate bodily functions; Circadian rhythm.
After flying across two continents, my body clock is completely out of sync.
definition 2: (non-technical) a cluster of cells in the hypothalamus lobe of the brain that controls Circadian rhythm, esp. the regulation of such biological functions as eating and sleeping.