adjective
Definition: Having a smooth, even surface without bumps or raised areas; also can refer to something that is not exciting or lively.
Example: The table has a flat surface, making it perfect for writing.
adverb
Definition: In a manner that is level, even, or without any variation; completely or directly.
Example: He laid the board flat on the table before starting the project.
intransitive verb
Definition: To sing or play at a pitch that is lower than the correct one.
Example: The singer was flat during the performance, missing the high notes.
noun
Definition: A flat is a level surface or area that is even and without bumps or curves. It can also refer to a type of apartment or a deflated tire.
Example: I live in a flat in the city center.
transitive verb
Definition: To make something level or smooth, often by pressing down or reducing its height.
Example: She used a rolling pin to flat the dough before baking.