passing reference
- mentionBrief verbal acknowledgment
- allusionIndirect reference to something
- nodBrief head tilt
- asideBrief theatrical digression
- fleetingPassing very quickly
hint · glancing · brief · offhand · casual · footnote · tangent · oblique · whisper · brush · skim · touch · cursory · throwaway · parenthetical · sidelong · gesture · wink