Tinny describes a sound that is thin and sharp, often like metal hitting metal. It is not full or deep but sounds light and hollow.
The radio has a tinny sound today.
Her voice was tinny and weak on the phone.
Tinny is used to say a sound or music is not good quality. It often sounds cheap and not full.
This speaker gives a tinny noise.
The tinny music hurts my ears.
Tinny is used as a name for a character in some children’s shows or books. It is capitalized and not a common word.
Tinny is a happy character on TV.
Tinny helps her friends every day.