- l.g.
- libera piscaria
- liberty
- liberty-day
- liberty-liquor
- liberty-men
- liberty-ticket
- libra
- libration of the moon
- liburna
- license
- lick
- licorn
- lido
- lie a hull
- lie along, to
- lie athwart, to
- lie by, to
- lie in!
- lien
- lie off!
- lie out!
- lie over
- liester
- lie the course, to
- lie-to, to
- lie under arms, to
- lieutenant, in the royal navy
- lieutenant-at-arms
- lieutenant-colonel
- lieutenant-general
- lieutenant's store-room
- life-belt
- life-boat
- life-buoys
- life-guards
- life-kite
- life-lines
- life-preserver
- lift
- lift an anchor, to
- lifted
- lifter
- lifting
- lifting-jack
- lifts
- lig
- ligan
- ligger
- light, to
- light airs
- light along!
- light-balls
- light bobs
- light breezes
- lighten, to
- lighter
- lighterage
- lighterman
- light-handed
- light-horse
- light-horseman
- lighthouse
- light ice
- light infantry
- lightning-conductor
- light-port
- light-room
- lights
- light sails
- light ship
- light water-draught
- light water-line
- lignamina
- lignum vitæ
- limb
- limber
- limber plates
- limber boards or plates
- limber-box
- limber-clearer
- limber-passage
- limber-plates
- limber-streak
- limbo
- limb-tangent
- lime
- lime-pots
- limiting parallels
- limmer
- limpet
- lins pin
- linch
- line, to
- line
- line-breadth
- line of battle
- line-of-battle ships
- line of bearing
- line of collimation