Nouns

(n)pruner, trimmera worker who thins out and trims trees and shrubs“untouched by the pruner's axe”
(n)trimmera machine that trims timber
(n)trimmer, trimming capacitorcapacitor having variable capacitance; used for making fine adjustments
(n)trimmer, trimmer joistjoist that receives the end of a header in floor or roof framing in order to leave an opening for a staircase or chimney etc.