Bound for Hell; damned.

(programming) A simple script or program designed to output the text "Hello World" as a demonstration of the computer language or environment.

(programming, by extension) A simple first program for any purpose.

plural of hellcat

(telephony, informal, dated) A female telephone operator.

Synonym of hello (“a greeting”)

The official English name of Greece.

plural of hellburner

A fireship designed to explode devastatingly.

(humorous) A response to being greeted with "hello".