As lawn and garden equipment goes, none seems to have as many names as the noble weed trimmer — aka weed wacker, weed eater, weed cutter, string trimmer, strimmer or, in some circles, brush trimmer ...

String trimmers get into spots larger lawn mowers can’t reach, like beneath bushes or right up against fences. They can delicately trim around flower beds or slash through overgrown weeds. Flipped on ...