Key: "S:" = Show Synset (semantic) relations, "W:" = Show Word (lexical) relations
Display options for sense: (gloss) "an example sentence"
Adjective
S: (adj) lightless (giving no light) "lightless stars `visible' only to radio antennae"
S: (adj) lightless, unilluminated, unlighted, unlit (without illumination) "came up the lightless stairs"; "the unilluminated side of Mars"; "through dark unlighted (or unlit) streets"