From Longman Dictionary of Contemporary Englishchuck something ↔ away phrasal verb informalGET RID OFto throw something away because you do not want it anymoreI chucked all my old clothes away when we moved house. →chuck→ See Verb table
Examples from the Corpus
chuck away• It's a nicepicture - it'd be a shame to just chuck it away.• What about my plan? Chuck it away.• Sometimes you chuck summat away by accident and then you have to go looking in bins to find it.