Leixlip - Irish Place Names

Patrick Weston Joyce
1923

Leixlip; a Danish name, meaning salmon leap (lax, a salmon), from the well-known cataract on the Liffey, still called Salmon leap, a little above the village. By Irish-Latin writers it is often called Saltus-salmonis (the leap of the salmon); and from this word saltus, a leap, the baronies of Salt in Kildare have taken their name.