一筆

いっぴつ, ひとふでippitsu

noun

1. one stroke (of a brush)
2. a few lines (of writing)
3. note
4. short letter
5. (dropping) a line
6. writing in one go (without stopping to apply more ink to the brush)
7. parcel (of land)
8. same handwriting

Study it in Yanamino