Word Study
ploughshare
WORDNET DICTIONARY
Noun ploughshare has 1 sense
- ploughshare(n = noun.artifact) plowshare, share - a sharp steel wedge that cuts loose the top layer of soil; Array is a part of moldboard plow, mouldboard plough
is a kind of wedge
CIDE DICTIONARY
ploughshare, n.
The share of a plow, or that part which cuts the slice of earth or sod at the bottom of the furrow. [1913 Webster]
For further exploring for "ploughshare" in Webster Dictionary Online