訓 おも(い),かさ(ねる) ・ 音 ジュウ,チョウ
Sino-Vietnamese: trọng
The character drew a person shouldering a heavy bundle. Heavy things matter, so it also means important — and stacked bundles give "to pile up".
Stroke data: KanjiVG (CC BY-SA 3.0) — kanjivg.tagaini.net
このかばんは重いです。 (このかばんはおもいです)
This bag is heavy.