井桁

 

Japanese Wikipedia has an article on:

井戸の設備 (well facilities, including igeta)

Wikipedia ^ja

 

English Wikipedia has an article on:

Puteal (classical European wellhead)

Wikipedia

Compound of 井 (i, “well, as in a water source”) +‎ 桁 (keta, “beam, girder”), from the way that four stout wooden beams would be crossed to form the top of a wellhead, similar in shape to a tic-tac-toe board.

The keta changes to geta as an instance of rendaku (連濁).

• (Tokyo) いげた [íꜜgètà] (Atamadaka – [1])^[1][2]
• (Tokyo) いげた [ìgétá] (Heiban – [0])
• IPA^(key): [iɡe̞ta̠]

井(い)桁(げた) • (igeta) ^{←ゐげた (wigeta)?}

1. a puteal: a wellhead for a water well, traditionally consisting of a wooden enclosure framed along the top, and possibly bottom, with stout wooden beams crossed at the ends
2. the symbols #, ＃, or ♯
3. a pattern similar to the symbol #, such as the shape of the crossed beams on a beam or coffered ceiling
4. a kind of 家紋 (kamon, “family seal”) featuring such a symbol
5. the number four in the argot of fishmongers

   Possibly from the way that the character 井 has four strokes, and the way that 桁 (keta) also means digit.

6. an advanced remodelling technique for the chassis of a miniature four-wheel-drive racing model, consisting of a reinforcement similar in shape to a traditional Japanese wellhead

井(い)桁(げた) • (Igeta) ^{←ゐげた (Wigeta)?}

1. a surname