#1 clear up v. make clear and (more) comprehensible; "clarify the mystery surrounding her death". wn
#2 clear up v. finish a task completely; "I finally got through this homework assignment". wn
#3 clear up v. free (the throat) by making a rasping sound; "Clear the throat". wn
#4 clear up v. become clear; "The sky cleared after the storm". wn
#5 clear up v. make free from confusion or ambiguity; make clear; "Could you clarify these remarks?"; "Clear up the question of who is at fault". wn
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