What is the meaning of Lass?

A girl; also , a young woman.

A female member of the Salvation Army; a hallelujah lass.

A sweetheart.

A female servant; a maid, a maidservant.

A term of address for a woman, or a female animal.

singular imperative of lassen

first-person singular present of lassen

loose, unattached

genitive plural of lasso

a load (amount transported at one time (on a cart, (open) trailer, or the like, or carried), also as an (informal) unit of measurement)

a load (large amount)

loss

alternative form of lhose

Source: wiktionary.org