Lock

• As an English, German and Dutch surname, from the noun lock.
• Also as an English surname, from Middle English loke, itself from Old English loca (“enclosure”) or *Loca (“Loki”) (theonym of the latter).
• Also as an English surname, from Middle English locke, from Old English locc (“lock of hair”).
• Also as a German surname, Americanized from Loch.
• As a Chinese surname, variant of Lok, itself from:
  • a Cantonese form of 樂 / 乐, see Le.
  • a Cantonese form of 陸 / 陆, 鹿 (lù), 逯 (lù), and 禄 (lù), see Lu.
  • a Cantonese form of 駱 / 骆 (luò), see Luo.

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-West Germanic *lok. Cognate with English lock.

Lock n (plural Locken)

1. hole
2. opening