dike, bank, embankment
堤 centers on a raised barrier of earth built to hold back water: a dike, bank, or embankment.
堤 combines 土 (earth) with 是, which likely contributes the sound. The character expresses an earthen embankment.
The left side is earth 土, and the right side 是 looks like a straight, raised path. Picture a long mound of earth built up to hold back water.
For テイ, imagine a sturdy earthen dike shaped like the letter T: T -> テイ, and the T-shaped embankment holds back the river.
bank; weir; embankment; levee
bank; embankment; dike
breakwater; mole
dam; weir
a small leak will sink a great ship
grave-site with circular embankment (Jomon period)
embankment made of earth; bank; levee
earthfill dam
to build an embankment
dam body; levee body
bank; embankment; dike
to construct an embankment
crest of dam; top of dam
banks of the Sumida river
haiku by Yosa Buson (Spring Wind on the Riverbank of Kema)
beach ridge
breakwater; wave-absorbing dyke (dike)
stone embankment; stone levee
neural crest
jetty; breakwater; pier