thouˈsandth adjective

1. Last of a thousand, or in an equivalent position in a greater number
2. Equal to one of a thousand equal parts

1. A thousandth part
2. A person or thing in thousandth position

Thousand Island dressing noun

A salad dressing made with mayonnaise, and flavoured with chopped gherkins, pimentos, etc

thouˈsand-legs noun

A centipede or millipede

thousand-poundˈ adjective

Weighing, costing, priced at a thousand pounds

thouˈsand-year adjective

Lasting or coming once in a thousand years

a thousand and one (informal)

1. Very many
2. An overwhelming number

one in (or of) a thousand

Anything exceedingly rare or excellent