clear up

definition: to free the throat by making a rasping sound
example: I cleared up my throat before I gave the speech.
speech part: verb
synonyms: clear
definition: to finish a task completely
example: I cleared the accounting up last week.
speech part: verb
synonyms: mop up
definition: to make free from confusion or ambiguity
example: I hope my explanation clears things ups.
speech part: verb
synonyms: clear
definition: to become clear
example: The sky really cleared up.
speech part: verb
synonyms: clear

How clear up is being used?