Light source
The crossword clue "Light source" is answered by BULB, a 4-letter entry. Used 12 times across 10 distinct years; most recently in 2021; first recorded in 1991. It appears in 9 publications in the xd corpus. Every figure on this page comes from the collection data itself, never from a guess.
The answer
BULB
4 letters. See every clue for this answer on the BULB answer page.
Used 12 times across 10 distinct years; most recently in 2021; first recorded in 1991. It appears in 9 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this collection link to their own answer page.
Other clues for BULB
Every other clue in this collection answered by BULB, most used first.
- Future tulip - used 31 times, most recently in 2026
- Tulip-to-be - used 21 times, most recently in 2026
- Onion, for one - used 16 times, most recently in 2023
- Garlic unit - used 7 times, most recently in 2026
- Socket insert - used 7 times, most recently in 2020
- Lamp insert - used 6 times, most recently in 2025
- Thermometer part - used 6 times, most recently in 2011
Related clues
Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Poi source - TARO, used 178 times
- Roe source - SHAD, used 132 times
- Sugar source - CANE, used 126 times
- Give off, as light - EMIT, used 122 times
- Light gas - NEON, used 112 times
- Sugar source - BEET, used 100 times
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