Answer
The word or phrase that is the solution to a Clue. In some puzzles the answer
is thematically modified before entry into the Grid, which is why the distinct term
Light is used by compilers when referring to the entry in the Grid.
Block
A Cell in a Grid which is not part of any Lights. It is usually coloured black
or grey. In Italian Style Grids, the black colour is inset by small margin.
Cell
A single square in a Grid. A cell that is part of a Light is usually coloured
white. Other cells are usually Blocks, though they can be Holes in some
unconventional puzzle grids.
Clue
A question or hint that the solver uses to work out the Answer. It usually
consists of the number of the Light, followed by the text of the clue, then
the Enumeration. Clues commonly consist of just a Definition or are Cryptic.
Compiler
A creator of a crossword puzzle.
Grid
A rectangular arrangement of squares into which the crossword Answers are entered.
Light
A horizontal or vertical series of white squares in a Grid, in which the
solver usually enters one Answer.
