functionlabel
nounUK /ˈfʌŋkʃənˌleɪbəl/
US /ˈfʌŋkʃənˌleɪbəl/
A function label is a name tag that tells you what a button or tool does.
The function label on the remote says 'power' so you know which button turns the TV on.
SYNONYMS
OTHER MEANINGS
2. In computing, a function label is a word or symbol that names what a piece of code does.
The programmer added a function label so other people could understand the code.
3. A function label can be a sticker on a machine that explains what each part is for.
The function label next to the lever shows it controls the water.
4. In math, a function label is a letter or name used to stand for a rule that changes numbers.
The teacher wrote the function label 'f' before the parentheses.