Leat - Lith
- line of battle ship
- Line of beauty
- Line of centers
- Line of collimation
- Line of dip
- Line of fire
- Line of flotation
- Line of force
- Line of incidence
- Line of levels
- Line of life
- line of lines
- Line of lines
- Line of march
- Line of nodes
- line of numbers
- Line of operations
- line of shadows
- Line of sight
- Line of striction