Definition of Welsh onion in English:

Welsh onion

Line breaks: Welsh onion

noun

  • An Asian onion that forms clusters of slender bulbs which resemble salad (spring) onions. It is the onion most commonly used in SE Asia.
    • Allium fistulosum, family Liliaceae (or Alliaceae)
    More example sentences
    • They've got some unusual things growing there - Welsh onions are a perennial onion which grows in clumps.
    • In the cold frame outside the beans, peas Welsh onions and sweet peas are also doing well, and I'm now leaving the lid open all the time.
    • Sunday was a quieter day, garden-wise, but I did manage to pot up my 5 sweetcorn plants and I also planted up my strawberry tower with 11 petunias, 5 basil, 4 carrots and 4 Welsh onions.

Origin

early 18th century (as Welch onion): Welsh from German welsch 'foreign'.

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