building block

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a single undivided natural thing occurring in the composition of something else
- units of nucleic acids
• Syn:
unit
• Derivationally related forms:
unitize (for: unit)
• Hypernyms:
thing
• Hyponyms:
chain, chemical chain, couple, unit cell, group,
radical, chemical group, molecule
• Part Meronyms:
part, piece
2. a block of material used in construction work
• Hypernyms:
building material
• Hyponyms:
ashlar, cinder block, clinker block, breeze block, keystone,
key, headstone, voussoir