TSUMUGU · TOCFL B2 (est.) · 字
跨
ㄎㄨㄚˋ · kuà
verb — to step across, straddle, span
字源 FORM — what the parts do
Tkuā → kuà — the reading drops to fourth tone
A foot (足) with 夸 kuā for the sound — the big stride that carries a leg over something: 跨過、跨越. 夸 reads kuā; here it falls to kuà. 夸 also gives 誇、挎.
故事 STORY — a scene to remember it by
抬腿（足），一大步邁過水溝——跨。
The leg (足) lifts, one wide step clears the ditch — 跨.
字源記憶法
意 · Meanings
(本義)跨過、跨越— to step across, straddle常用
→跨國、跨年— to span (borders, years)常用
(本義) original meaning · → ⇒ each arrow = one more step of extension