Definition of “throw sth away” - Learner’s Dictionary

throw sth away

phrasal verb with throw uk us /θrəʊ/ verb [ T ] (past tense threw, past participle thrown)
GET RID OF

B1 to get rid of something that you do not want any more:

He read the magazine and then threw it away.
WASTE OPPORTUNITY

to waste a skill or opportunity:

You've spent three years studying - don't throw it all away.

(Definition of “throw sth away” from the Cambridge Learner's Dictionary © Cambridge University Press)