-lock

Etymology
From, , , from , from , , from.

The etymology of the suffix is the same as that of the noun "play, sport", also "sacrifice, offering", corresponding to obsolete Modern English  (dialectal ) "sport, fun, glee, game", cognate to Gothic laiks "dance", Old Norse leikr "game, sport" and Old High German leih "play, song, melody" (> Old French  "song, lyric, poem, lay"), obsolete or dialectal 🇨🇬. Old English ("to please", Modern English like) is from the same root. In modern English, the noun has been reintroduced through the cognate Swedish as a specialist term referring to mating behaviour.

Suffix

 * 1)  Action or proceeding, practice, ritual