• A similar underground organ such as a corm or a rhizome
  • A rounded underground storage organ present in some plants, notably those of the lily family, consisting of a short stem surrounded by fleshy scale leaves or leaf bases and resting over winter
  • A plant grown from an organ of this kind
  • An object with a rounded or teardrop shape like a bulb, in particular
  • an underground bud [n BULBS] : BULBAR [adj], BULBED [adj]
  • A light bulb
  • An expanded part of a glass tube such as that forming the reservoir of a thermometer
  • A hollow flexible container with an opening through which the air can be expelled by squeezing, such as that used to fill a syringe
  • A spheroidal dilated part at the end of an anatomical structure