Misspelling of high-level languages.

plural of critical tide level

(computing) a procedural programming language of the CCITT designed for use in telecommunication switches and still in use for legacy systems in some telecommunication companies and for signal box programming.

Wrong in many ways, to a great degree, or to the point of being disturbing.

Any of the top-level domains assigned by the IANA based on type of organization.

plural of generic top-level domain

(rail transport) A level crossing with a single barrier on each side of the railway line, the barriers when lowered only block half of the road.

plural of automatic half-barrier level crossing