legato: An articulation designation meaning that notes should be played smoothly and flowingly.

legato slide: Playing a note at one fret and then, withoug repicking the string, sliding your finger to a different fret while maintaining pressure on the string.

lick: A short melodic phrase — a solo is a succession of licks.

ligature; beam: In musical notation, a ligature can be used to connect a group of notes (eighth notes or shorter) that would normally each be flagged.