Verb (5-dan, う, intransitive)
1. to crawl; to creep; to go on all fours
足が使えなければ這ってでも逃げるべきです。If you can't use your legs, you should get away even if you have to crawl.
2. to slither; to wriggle
大きなヘビが木の枝を這っていく。A big snake slithers along the branch.
3. to trail (of vines, flowers, etc.); to spread; to creep
木の根が地面の上を這うように伸びている。The tree roots spread out, creeping along the surface of the ground.