noun

crawler

noun

A baby or young child who can move on hands and knees but not yet walk.

"At ten months old, she was an enthusiastic crawler."

A software program that automatically browses and indexes web pages.

"Google's crawler visits the site every few days to update its index."

A vehicle that moves on tracks instead of wheels, used for heavy construction or off-road work.

"The mining company used a huge crawler to move equipment across the site."

How to Use Crawler

Learner’s notes

In plain EnglishSomething (or someone) that crawls — a pre-walking baby, a tracked vehicle, or a web-indexing bot.

Common pairings

web crawler search engine crawler tractor crawler

crawlers plural, crawlers plural

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Can you complete this real example?

At ten months old, she was an enthusiastic _____.

From crawl + the agent suffix -er, "one that crawls."

trawler