Definitions
1.nounThe usual amount swallowed.
2.nounThe sound of swallowing, sometimes indicating fear.
3.nounAn unspecified small number of bytes, often two.
4.verbTo swallow eagerly, or in large draughts; to swallow up; to take down in one swallow.
5.verbTo react nervously by swallowing.
6.interjectionAn indication of (the sound of) an involuntary fear reaction in the form of a swallowing motion.