Theme — Defs

01 n. A subject or topic on which a person writes or speaks; a proposition for discussion or argument; a text.

1.
A subject or topic on which a person writes or speaks; a proposition for discussion or argument; a text.
“My theme is alway one and ever was.” — Chaucer.

“And when a soldier was the theme, my name Was not far off.” — Shak.
2.
Discourse on a certain subject.
“Then ran repentance and rehearsed his theme.” — Piers Plowman.

“It was the subject of my theme.” — Shak.
3.
A composition or essay required of a pupil.
4.
A noun or verb, not modified by inflections; also, that part of a noun or verb which remains unchanged (except by euphonic variations) in declension or conjugation; stem.(Gram.)
5.
That by means of which a thing is done; means; instrument.[Obs.]
6.
The leading subject of a composition or a movement.(Mus.)