Used in a common chronometric counting scheme, in which each iteration is sequentially numbered and supposed to be approximately one second in length.

The number 1000.

(US) One thousand plus one.

The ordinal numeral form of one thousand; last in order of a series of a thousand; next after the nine hundred and ninety-ninth.

(singular only) The person or thing in the thousandth position. / One of a thousand equal parts of a whole.

5000

The cardinal number 10,000

A city in Ventura County, California, United States.

(US, idiomatic) After reconsidering; on further consideration.

(idiomatic) To change one's opinion, or be uneasy about a previous decision.