I agree with "pass". The way he wrote 1st letter of the word was similar to p for "pleasure".
Pass makes sense.
I hope "little Nellie" remembered him. One of my aunts by marriage was the "little Nellie" in her family, youngest of a large brood. She was 4 when her eldest brother was killed, aged 22. The 2nd brother joined up in 1916, aged 18, went to France April 1917 and was killed in action in 1918, aged 20, a year after his brother. I learned about them only recently. Their names will be inscribed on the new war memorial for their town.