To (inhale and) exhale; to breathe.
To take up oxygen and produce carbon dioxide through oxidation.
To breathe in and out successively.
To recover one's breath or breathe easily following stress.
To make a short, audible inhalation, through the nose, as when smelling something.
To perceive vaguely.
To inhale drugs (usually cocaine) through the nose, usually in powder form.
To say (something) while sniffing, such as in case of illness or unhappiness, or in contempt.
To pry; to investigate in an interfering manner.
To intercept and analyse packets of data being transmitted over a network.
To be dismissive or contemptuous of something.
A short inhalation sound, sometimes associated with crying.
A brief perception, or tiny amount.
An instance of sniffing.
Cocaine.
A quantity of something that is inhaled through the nose.