lip liner or lip·lin·er 
(lĭplī′nər)
(lĭplī′nər)n.
A cosmetic used to outline the lips and to keep lipstick or lip gloss from spreading into unwanted areas.
- instil
- instill
- instillation
- instiller
- instillment
- instinct
- instinctive
- instinctively
- instinctual
- instinctually
- in stitches
- institute
- instituter
- institution
- institutional
- institutionalism
- institutionalist
- institutionalization
- institutionalize
- institutionally
- institutor
- in stock
- in store
- instr.
- instroke