The Word is:”and”

and

ənd, (ə)n, and/Submit
conjunction
conjunction: and

1.used to connect words of the same part of speech, clauses, or sentences, that are to be taken jointly.
bread and butter”
synonyms: together with, along with, with, as well as, in addition to, including, also, too; More
used to connect two clauses when the second refers to something that happens after the first.
“he turned round and walked out”
used to connect two clauses, the second of which refers to something that results from the first.
“there was a flash flood and by the next morning the town was under water”
connecting two identical comparatives, to emphasize a progressive change.
“getting better and better”
connecting two identical words, implying great duration or great extent.
“I cried and cried”
used to connect two identical words to indicate that things of the same name or class have different qualities.
“all human conduct is determined or caused—but there are causes and causes”
used to connect two numbers to indicate that they are being added together.
“six and four makes ten”
archaic
used to connect two numbers, implying succession.
“a line of men marching two and two”
2.used to introduce an additional comment or interjection.
“if it came to a choice—and this was the worst thing—she would turn her back on her parents”
used to introduce a question in connection with what someone else has just said.
“‘I found the letter in her bag.’ ‘And did you steam it open?’”
used to introduce a statement about a new topic.
“and now to the dessert”
3.informal
used after some verbs and before another verb to indicate intention, instead of ‘to’.
“I would try and do what he said”

noun
noun: AND; plural noun: ANDs

1.ELECTRONICS
a Boolean operator which gives the value one if and only if all the operands are one, and otherwise has a value of zero.
a circuit which produces an output signal only when signals are received simultaneously through all input connections.
noun: AND gate; plural noun: AND gates

Source credit: Google