7 letters · 11 points in Scrabble
noun a worker who thins out and trims trees and shrubs
noun a machine that trims timber
noun capacitor having variable capacitance; used for making fine adjustments
originFrom trim + -er. Figurative sense of “person who changes views with prevailing opinions” from 1680s, from nautical sense of “adjust sails with the wind”.
Etymology from Wiktionary, CC BY-SA 3.0