What is the meaning of trimmer?

noun

• A worker who thins out and trims trees and shrubs.
  • usage: "untouched by the pruner's axe"
  • synonyms: pruner
• A machine that trims timber.
• Capacitor having variable capacitance; used for making fine adjustments.
  • synonyms: trimming capacitor
• Joist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc..
  • synonyms: trimmer joist

adjective

• Thin and fit.
  • usage: "the spare figure of a marathon runner"; "a body kept trim by exercise"
  • synonyms: spare, trim
• Of places; characterized by order and neatness; free from disorder.
  • usage: "even the barn was shipshape"; "a trim little sailboat"
  • synonyms: shipshape, trim, well-kept
• Neat and smart in appearance.
  • usage: "a clean-cut and well-bred young man"; "the trig corporal in his jaunty cap"; "a trim beard"
  • synonyms: clean-cut, trig, trim
• Severely simple in line or design.
  • usage: "a neat tailored suit"; "tailored curtains"
  • synonyms: tailored, trim