Latitude
The distance measurement from the Equator (north or south) calculated in degrees along a meridian line. Each degree of latitude equals sixty nautical miles at that specific location.

Launched
To be thrown in the air, usually from an especially gnarly wipeout.

Layback
As name indicates, it's the act of laying back into the face of the wave while surfing backside. Can be used to regulate speed or as an exhibition of style; pig doggin'.

Leads Channel
Someone who makes you think he's surfing by sitting in the channel, but never takes a wave.

Leads Check
The poser who lets you think he's checking the surf, but never actually goes out or has a board in his car.

Leash Lag Drag
When you wipe out and get dragged under water from your board having got caught in the soup. This is caused from having a leash that's too long or too short for your board.

Leash Plug
A small cylindrical plug with a cross metal rod used to attach a leash to a surfboard, usually inserted in the deck (top) near the tail of the board.

Leash
A piece of surgical or similar tubing attaching the board to the riders ankle short board or calf just below the knee longboard. Synonym: Leg Rope.

Ledge
A part of an underwater land or coral mass that causes waves from deep water to jack and pitch forward when they hit it.

Ledgy
A wave characterized by a steep, vertical face that cause acid drop takeoffs. So named because of the feeling that you're dropping off of a ledge.

Leeward
Converse application of Windward. Spot, area, side sheltered, or otherwise away from prevailing wind direction.

Left
A breaking wave peeling to the left. Left/Right is always stated from the perspective of the rider facing toward shore or with back facing the wave.

Lefty
A surfer who manages to go left on days when only rights seem to be breaking. Another name for a Floatwaller, Bajawaller, Barnwaller, or Highway Surfer.

Length
Surfboard dimension as measured from nose to tail along the stringer.

Lexidex
Another name for the Riptionary Surf Lingo Lexicon.

Licked
To be worked, rag dolled, etc.

Lifestyle
Often the catch all used by non-surfers to describe the way surfers go about living.

Light It Up
A descriptive phrase use to describe a surfer who is surfing really well. They are said to be "lighting it up."

Lines
The visible waves appearing on the horizon as they approach.

Lineup
Place in the water just outside where the wave breaks. Where surfers line up for the sets.

Lip Turn
The surfer drives the craft into the pitching wave crest. Using the crest as a pivot point, the surfer radically changes direction of the craft and takes the drop again down the steep wave face.

Lip
The top edge portion of the wave that's usually curling forward as the waves stack and folds just before breaking.