Definition of "gulp" in English

noun

1. The usual amount swallowed.

2. The sound of swallowing, sometimes indicating fear.

3. (rare, computing) An unspecified small number of bytes, often two.

verb

1. To swallow eagerly, or in large draughts; to swallow up; to take down in one swallow.

2. To react nervously by swallowing.

interjection

1. An indication of (the sound of) an involuntary fear reaction in the form of a swallowing motion.