Knock. See Cnoc.

Lax (Scand.; Ger. lachs), 'a salmon'; as Loch Laxford in Sutherland; the Laxay in the Hebrides and in Man; Laxweir on the Shannon.

Leamhan (Ir. and Gael.; pron. lavawn), 'the elm-tree;' as in Leven, Lennox, Laune.

Lea, Lee, Ley (A.S. leáh), 'a meadow;' Hadleigh, Waterloo.

Linn (Celt.), 'a waterfall;' as Lynn Regis in Norfolk; Roslin, 'the promontory (ross) at the fall;' Linlithgow, Linton.

Lis (Celt.), 'an enclosure,' 'a fort,' 'a garden;' as Lismore ('the great enclosure' or 'garden').

Llan (W.), 'an enclosure,' 'a church;' as Llandaff ('the church on the Taff').

Llano (Sp.), 'a plain.'

Loch, Lough (Gael.), 'a lake.'

Low and Law (A.S. hláw, hlæw),'a rising ground;' as Hounslow, Ludlow, and numerous laws in Scotland. [Cog. with Goth. hlaiw, a mound, and perh. allied to L. clivus, a slope.]