What is the meaning of cracking?

noun

• A sudden sharp noise.
  • usage: "the crack of a whip"; "he heard the cracking of the ice"; "he can hear the snap of a twig"
  • synonyms: crack, snap
• The act of cracking something.
  • synonyms: fracture, crack
• The process whereby heavy molecules of naphtha or petroleum are broken down into hydrocarbons of lower molecular weight (especially in the oil-refining process. )

verb

• Become fractured; break or crack on the surface only.
  • usage: "The glass cracked when it was heated"
  • synonyms: crack, check, break
• Make a very sharp explosive sound.
  • usage: "His gun cracked"
  • synonyms: crack
• Make a sharp sound.
  • usage: "his fingers snapped"
  • synonyms: snap, crack
• Hit forcefully; deal a hard blow, making a cracking noise.
  • usage: "The teacher cracked him across the face with a ruler"
  • synonyms: crack
• Pass through (a barrier. )
  • usage: "Registrations cracked through the 30, 000 mark in the county"
  • synonyms: break through, crack
• Break partially but keep its integrity.
  • usage: "The glass cracked"
  • synonyms: crack
• Break suddenly and abruptly, as under tension.
  • usage: "The pipe snapped"
  • synonyms: snap, crack
• Gain unauthorized access computers with malicious intentions.
  • usage: "she cracked my password"; "crack a safe"
  • synonyms: crack
• Suffer a nervous breakdown.
  • synonyms: crack up, crack, crock up, break up, collapse
• Tell spontaneously.
  • usage: "crack a joke"
  • synonyms: crack
• Cause to become cracked.
  • usage: "heat and light cracked the back of the leather chair"
  • synonyms: crack
• Reduce (petroleum) to a simpler compound by cracking.
  • synonyms: crack
• Break into simpler molecules by means of heat.
  • usage: "The petroleum cracked"
  • synonyms: crack

adjective

• Very good.
  • usage: "he did a bully job"; "a neat sports car"; "had a great time at the party"; "you look simply smashing"
  • synonyms: bang-up, bully, corking, dandy, great, groovy, keen, neat, nifty, not bad, peachy, slap-up, swell, smashing