noun, informal - a pair of sunglasses
noun, informal - a mosquito (informal Australian)
noun, informal - someone's best friend
noun, British English, informal - something that is considered silly, nonsense, or worthless
adjective - able to send back light, heat, sound, etc., from a surface
noun - a person who needs to be cared for due to illness, disability, or injury
adjective - not correct or based on truth