Y level

noun

: a surveyor's level with a telescope supported in y-shaped rests and as a result capable of being rotated around its own axis or of being taken out of the supports and turned end for end for purposes of adjustment compare dumpy level

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!