1

For example, 1^(1/2) (i.e., the square root of 1), could be 1, or example could be -1.

because 1 * 1 = 1

The square root of 1 is 1 because 1 * 1 = 1.

nothing else but a number that, when multiplied by itself, gives the original number

a square root is nothing else but a number that, when multiplied by itself, gives the original number.

a number multiplied by itself to get the given value

The square root is a number multiplied by itself to get the given value.