Plural of bedlamp; multiple small lamps designed for use next to a bed.
From bedlamp + the standard English plural suffix -s. This simple plural emerged when bedlamp usage became widespread enough that multiple lamps in one home were common.
The plural form reminds us that bedroom lighting design became sophisticated enough to require multiple light sources—one on each side of the bed became the standard luxury.
Complete word intelligence in one call. Free tier — 50 lookups/day.