Meaning

• A means of obtaining something by trick or deception.

  "A good blag to get into a nightclub is to walk in carrying a record box."

• An armed robbery.

Meaning

• To obtain (something) for free, particularly by guile or persuasion.

  "Can I blag a fag?"

• (specifically) To obtain confidential information by impersonation or other deception.

  "The newspaper is accused of blagging details of Gordon Brown's flat purchase from his solicitors."

• To pick up someone.

• (1960s) To inveigle by persuasion.

  "He's blagged his way into many a party."

• (1940s) To deceive; to perpetrate a hoax on.

Meaning

• Fake, not genuine.

  "You’re wearing a blag designer shirt!"