Lock

There are three possibilities:

• From the words Old English loc (“lock”).
• From Middle English loke, itself from loca (“enclosure”) or *Loca (“Loki”) (theonym of the latter).
• From Middle English locke, from locc (“lock of hair”).

Lock

1. A surname.
2. An unincorporated community in Knox County and Licking County, Ohio, United States.
3. A town in Elliston district council area, Eyre Peninsula, South Australia; from the surname.

• According to the 2010 United States Census, Lock is the 5,058^th most common surname in the United States, belonging to 6,936 individuals. Lock is most common among White (76.33%) and Black (10.86%) individuals.

• Locks Heath (which may be from the surname)

• KLOC, Kloc

From Middle Low German lok, from Old Saxon *lok, from Proto-Germanic *luką. Cognate with English lock.

Lock n (plural Locken)

1. hole
2. opening