(かいろ)

かいろ
noun, adverb
sea route; by sea
traveltransportation
1. sea route; sea lane; ocean route
A route across the sea used for shipping or travel by boat.
海路(かいろ)(ひら)かれた
A sea route was opened.
Ancient sea routes were important for trade.
Sea routes where pirates appear must be avoided.
2. by sea; via sea travel
Used adverbially to mean 'by ship' or 'via sea,' describing the method of travel or transport.
I'll send the luggage by sea.
海路(かいろ)三日(みっか)かかる
It takes three days by sea.
It's cheaper to transport large quantities of goods by sea.

Used both as a noun (sea route) and adverbially (by sea). Common in discussions of trade, history, logistics, and travel.

Forms

(かい) (sea) + () (route, road)

Common collocations

Parallel terms