Sometimes, in the definition of a word there is a part that explains the context for which the meaning is valid; for example, for automagically the definition is the following:
(especially in relation to the operation of a computer process) automatically and in a way that seems ingenious, inexplicable, or magical.
Sometimes the part that is between parentheses is different, as in the definition of puzzle:
cause (someone) to feel confused because they cannot understand something.
When reporting the definition on EL&U, should I use the parentheses as I have reported here, or should I use brackets as in the following definition of bracket?
[with adjective or noun modifier] a category of people or things that are similar or fall between specified limits.