Definitions

1. verb

past tense of use, meaning to employ or utilize something

“She used to play the piano every day.”

2. noun

something that has been employed or utilized, especially in a mechanical or technical sense

“The car’s used engine was cheaper than a new one.”

3. adjective

not new, previously owned or employed

“He bought a used book at the thrift store.”

4. adverb

in a used or accustomed way

“He used to play the guitar in a used, worn-out way.”