概
ガイ, おおむ.ね

outline, condition, approximation, generally

JLPT1 G7 S14 F1335

As per 既# (engorged) + 木 tree/wood → wooden implement used to level off an engorged surface such as a heaping pile of grain or fresh plaster on a wall (compare 墍) → *in general*; *approximately* (← level off).

[Full Kanji Etymology List]