The Collaborative International Dictionary of English v.0.48:
Err \Err\ ([~e]r), v. i. [imp. & p. p. Erred; p. pr. & vb. n.
Erring (?; 277, 85).] [F. errer, L. errare; akin to G.
irren, OHG. irran, v. t., irr[=o]n, v. i., OS. irrien, Sw.
irra, Dan. irre, Goth, a['i]rzjan to lead astray, airzise
1. To wander; to roam; to stray. [Archaic] "Why wilt thou err
from me?" --Keble.
What seemeth to you, if there were to a man an
hundred sheep and one of them hath erred. --Wyclif
2. To deviate from the true course; to miss the thing aimed
at. "My jealous aim might err." --Shak.
3. To miss intellectual truth; to fall into error; to mistake
in judgment or opinion; to be mistaken.
The man may err in his judgment of circumstances.
4. To deviate morally from the right way; to go astray, in a
figurative sense; to do wrong; to sin.
Do they not err that devise evil? --Prov. xiv.
5. To offend, as by erring.