1.
heaped, piled high, overflowing
A large amount of something piled up like a mountain, typically food on a plate.
ごはんを山盛りにした。
I piled the rice high.
Literally "piled like a mountain." Describes food or other items heaped generously on a plate or surface. Can function as a noun (山盛りのごはん) or adverbially (山盛りに盛る).
Etymology
山 (mountain) + 盛り (serving, piling).
Common patterns
Register
Casual and vivid. Commonly used in everyday conversation about food. For a backlog of work or problems, the usual word is 山積み.