1To crawl on hands and knees or to move along the ground using one's body (as a baby or injured person, or certain animals).
赤ちゃんが床の上を一生懸命這っている。
The baby is crawling hard across the floor.
彼は怪我をして、自力で這って外に出た。
He was injured and crawled out on his own.
蜘蛛が壁を這っているのを見た。
I saw a spider crawling along the wall.
2To slither or wriggle (like a snake or worm), moving by undulating the body.
草むらを蛇がゆっくり這っていた。
A snake was slowly slithering through the grass.
古い木の間をミミズが這っているのが見える。
You can see a worm wriggling between the old trees.
3To trail, creep, or spread (of vines, creepers, or roots) along the ground or over surfaces.
ツタが古い塀を這って家を覆っている。
Ivy is crawling over the old wall and covering the house.
花のつるがフェンスを這っているので支柱を立てた。
Since the flower vines were creeping along the fence, I put up stakes.