firstform
nounUK /ˈfɜːst fɔːm/
US /ˈfɜːrst fɔːrm/
The first form is the class you join when you start a new school.
My little brother is in firstform this year.
OTHER MEANINGS
2. The earliest version of something before it is changed.
This drawing is the firstform of the final poster.
3. The basic shape or model used to make copies of something.
The potter pressed clay into the firstform.
4. The first group of students to join a new school or program.
The firstform arrived before the other classes.