A part
盛り
Shown as a part of 1 word so far, read one way.
もり 1 word
- 盛り上がるもりあがるto rouse, to swell, to rise
盛り上がる · here “boom”
Also written with 盛り
These words contain the character in their spelling but show no breakdown that names it, so nothing is claimed about its role in them.