Meaning

• An instance of sniffing.

  "She gave the flowers a quick sniff to check they were real."

• A quantity of something that is inhaled through the nose

• A brief perception, or tiny amount.

• Cocaine.

Meaning

• To make a short, audible inhalation, through the nose, as when smelling something.

  "I sniffed the meat to see whether it had gone off."

• To say something while sniffing, for example in case of illness or unhappiness, or in contempt.

  ""He's never coming back, is he?" she sniffed while looking at a picture of him."

• To perceive vaguely

  "I can sniff trouble coming from the basement."

• To be dismissive or contemptuous of something.

  "This opportunity is not to be sniffed at."

• To intercept and analyse packets of data being transmitted over a network.

• To inhale drugs in powder form (usually cocaine) through the nose.

Meaning

• A short inhalation sound, sometimes associated with crying.