Definition

1. Noun:
   • Serration, tooth (of a saw or gear): Refers to the individual, often triangular, projections that form the cutting edge of a saw blade or the engaging teeth of a gear.
   • Serrated edge, cogged edge: Refers to the overall shape or pattern characterized by a series of regular, sharp projections and indentations, resembling the teeth of a saw.

Usage Examples

• Noun:
  • Lưỡi cưa này có những chiếc răng cưa rất sắc. (This saw blade has very sharp teeth.)
  • Lá của cây này có mép răng cưa. (The leaves of this plant have serrated edges.)
  • Bánh xe răng cưa khớp với nhau để truyền chuyển động. (The cog-wheels mesh together to transmit motion.)

Advanced Usage

• "Có hình răng cưa": To have a serrated shape, to be jagged.
  • Đường cắt có hình răng cưa, không thẳng. (The cut has a jagged shape, it's not straight.)
• "Viền răng cưa": A serrated border or hem.
  • Chiếc lá được nhận dạng bởi viền răng cưa của nó. (The leaf is identified by its serrated border.)

Variants and Related Words

• Răng lược (Noun): Literally "comb teeth"; used to describe a finer, more regular serration, like the teeth of a comb or a finely toothed leaf edge.
  • Lá có mép răng lược. (The leaf has a finely serrated edge.)
• Khía răng cưa (Noun Phrase): A serrated notch or indentation.
  • Vết cắt để lại những khía răng cưa. (The cut left serrated notches.)

Synonyms

• Có răng: Toothed, dentate (a more general term for having tooth-like projections).
• Lồi lõm: Uneven, bumpy (describes an irregular surface, but not necessarily in a regular, tooth-like pattern).

Related Phrases / Compound Words

• Lá răng cưa (Noun Phrase): Serrated leaf.
• Bánh xe răng cưa (Noun Phrase): Cogwheel, gear.
• Lưỡi cưa răng cưa (Noun Phrase): Toothed saw blade. (Note: "răng cưa" here specifies the type of blade).

Related Idioms

• Như răng cưa: (As jagged as a saw's teeth). Used to describe something very uneven or irregular in outline.
  • Đường biên trên bản đồ chạy như răng cưa. (The border on the map runs as jagged as a saw's teeth.)

1. Serrated
   • Lá răng cưa
     Serrated leaves
   • Bánh xe răng cưa
     A cog-wheel