a soft covering to keep a teapot, boiled egg, etc. hot

a photograph of Smith pouring tea from a pot with a knitted cosy

mug cosies are simple to make

a canopied corner seat for two

make (someone) feel comfortable or complacent

she cosied him and made out she found him irresistible

giving a feeling of comfort, warmth, and relaxation

the flickering lamp gave the room a cosy lived-in air