Lacking a bulb; without a bulb or bulb-like structure.
From 'bulb' (Latin 'bulba') plus '-less' meaning without, a common English suffix for negation.
A 'bulbless' plant might look boring compared to showy tulips, but some species store their energy in roots or tubers instead—different strategies for the same survival goal.
Complete word intelligence in one call. Free tier — 50 lookups/day.