n. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
n. a rounded part of a cylindrical instrument (usually at one end)
n. anything with a round shape resembling a teardrop
n. a rounded dilation or expansion in a canal or vessel or organ
n. 球茎, 电灯泡
[医] 球, 鳞茎, 球茎