Suffix attached to nouns indicating movement or position along a linear feature such as a wall, river, road, or railroad. Often used with に (〜伝いに).
See also: 伝う
Walking along the river, I saw a small bridge.
線路伝いに駅まで歩いた。
I walked along the railroad tracks to the station.
from mountain to mountain; along the mountains
along the ridges; ridge-hopping
island-hopping; from island to island
following a river; along a river
Derived from the verb 伝う (つたう), meaning 'to go along' or 'to follow'. The suffix form 伝い (づたい) is the continuative form (連用形) of the verb, used as a noun suffix.