A small onion bulb planted instead of seed to yield a mature bulb.
More example sentences
- Buy onion sets (small bulbs) from your favorite garden center or catalog, then as soon as you can work the soil, push them about an inch into the soil, pointy end up.
- They were planted from red onion sets destined to develop large bulbs.
- You can put out onion sets at this time or try interesting types from seed.
Definition of onion set in:
- The US English dictionary