畑
はた, はたけ, ばたけ, かま, まま

farm, field, garden, one's specialty, (kokuji)

JLPT0 G3 S9 F1176

火 fire + 田 field → burn off weeds and stalks in fields to render them fertile → *field*; *farm*. Also, *one's field of specialty* (← field in the figurative sense). Compare 畠.

[Full Kanji Etymology List]