坻

chí = ch + Ø2

islet / rock in river

坻

dǐ = di + Ø3

place name

坻 character breakdown

坻
- 土
  - 一
  - 十
    - 一
    - 丨
- 氐
  - 丶
  - 氏

土

tǔ = tu + Ø3

Tu (ethnic group) / surname Tu

土

tǔ = tu + Ø3

earth / dust / clay / local / indigenous / crude opium / unsophisticated / one of the eight categories of ancient musical instruments 八音[ba1 yin1]

土 = 十 + 一 : Tommy Turtle (tu) wants to fix a cross (十) on a flute (一) in the space station's living room (Ø3). He uses dust and clay (土) to hold them together.

氐

di̅ = di + Ø1

name of an ancient tribe

氐

dǐ = di + Ø3

foundation / on the whole

氐 = 丶 + 氏 : Dorothy Gale pulled a petal leaf out of the space station concrete foundation. Christopher MacLeod explains her that it was a special petal leaf, and that Dorothy is destined to be the king of England now that she pulled it out.