Bridge abutment - hashidai

Japanese: 橋台 - はしだい

〘noun〙① A platform-like structure at either end of a bridge that supports it. A sibling. ※Haiku poem, Danrin Jyuhyakuin (1675), part 2: "I stopped my horse and looked at the attack on Sahoyama Castle (yukishiba) The waves of Hashidai rustling in the morning sun (matsui)" ② Near a bridge. At the edge of a bridge. At the base of a bridge. ※Sharebon, Kyakushu Ichikahyo (around 1789-1801), Tanbaya no Sou: "The sake on the bridge abutments over here is called abacus sake, and it's a proxy."

Kyo-daikeu ... [bridge abutment]

〘 noun 〙 The substructure of a bridge, a platform-like structure installed at both ends. It supports the ends of the superstructure such as the bridge girders , and transmits the load of the bridge to the ground. T-shaped abutments, U-shaped abutments, etc. [Engineering Vocabulary (1886)]

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙① 橋の両端にあって、橋を支える台状のもの。きょうだい。※俳諧・談林十百韻（1675）下「駒とめて佐保山の城打ながめ〈雪柴〉朝日にさはぐはし台の波〈松意〉」② 橋のそば。橋際。橋もと。※洒落本・客衆一華表（1789‐1801頃）丹波屋之套「こっちらの橋台(ハシダイ)の酒ゃア算盤酒やといって名代でございやす」