| light bulb moment | |
| —n | |
| informal a moment of sudden inspiration, revelation, or recognition | |
| [C20: from the cartoon image of a light bulb lighting up above a character's head when he or she has an idea] | |
| a gadget; dingus; thingumbob. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
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