- l network
- l section filter
- l region of carcinogen
- litmus paper
- line unloaded
- learning
- letter code
- line code
- line roulette
- line equipment
- line interface base
- lidocaine
- line group
- laundry truck
- lit. an oilman's ox—a toiling wretch
- laugher
- live to tell the tale
- love handle
- lithomancer
- lagophthalmic keratitis
- leaf_cutter
- lbw
- long_billed marsh wren
- lead palsy
- leader of a herd
- locomotion
- letter out
- letter quality
- litigator
- litigant
- lorn
- levator
- laszlo lowestein
- latino sine flexione
- linguistics department
- light_hearted
- luminous paint
- litho
- lippi
- leaded
- luther
- leading article
- leadership used in a derogatory sense
- leading lady
- lead the way
- leading a parasitic life
- leading
- ledercillin vk
- ledbetter
- lead subacetate