An "AND gate" refers to a digital logic gate that operates on two or more inputs and provides a single output if and only if all inputs are high (i.e., true). A few synonyms for the "AND gate" include:
1. Conjunction gate
2. Multiplier gate
3. Intersection gate
4. Boolean gate (since it operates on Boolean logic)
5. Common gate (as it requires all inputs to be common or true for the output to be true).
These synonyms come in handy while discussing the same concept but with different terms. Nowadays, these gates are commonly used in electronic devices, computers, and binary systems. Understanding the "AND gate" and its synonyms is essential in digital electronics as it helps in the design and development of circuits.