Definitions from Wiktionary (sell out)

▸ verb:  To sell all of a product that is in stock.
▸ verb:  (intransitive) To abandon or betray one's principles to seek profit or other personal advantage; to abandon or betray one's supporters through this change.
▸ verb:  (transitive) To betray (a person), usually a close friend or family member, for personal gain.
▸ verb:  To sell one's business (with a connotative emphasis on entirety and finality).
▸ verb:  (figurative) To commit or abandon oneself entirely (to a cause, a team, etc.).
▸ verb:  (historical, military) To sell one's commission.
▸ verb:  (intransitive, archaic) To hurry out.
▸ Also see sell_out

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