from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The sign ⟨ № ⟩.
from the GNU version of the Collaborative International Dictionary of English
- n. Number; -- often abbrev. No.
from The Century Dictionary and Cyclopedia
- n. Number; the figure or mark by which any number of things is distinguished: abbreviated No.: as, he lives at No. 7 (usually read or spoken “number 7”).
From the Latin numerō, the ablative singular form of numerus ("number"). (Wiktionary)