noun

• (figuratively) Any very short distance.
  "Don't move an inch!"
• (meteorology) A depth of one inch on the ground, used as a measurement of rainfall.
  "Let us consider what one inch of rain really means. If an acre of land were covered with water to the depth of only the tenth part of an inch, that layer of water would weigh more than 10 tons: thus 1 inch of rain is ten times that amount—in fact, very nearly 101 tons."

verb

• (intransitive, followed by a preposition) To advance very slowly, or by a small amount (in a particular direction).
  "Fearful of falling, he inched along the window ledge."

noun

• (Scotland, Ireland) A small island; an islet.
  "The blackening wave is edged with white; / To inch and rock the sea-mews fly."
• (Scotland, Ireland) A meadow, pasture, field, or haugh.
  "An ivy-clad farmhouse surrounded by trees, it stood on the sunny side of a sloping hill at the foot of which the Darigle river curved its way through gold-furzed inches to disappear under a stone bridge into the woods beyond."

adj

• (Hong Kong, colloquial) cocky and cheeky
  "I still remember Donald Duck sit next to him after NG dog being 'Done'd to F.2 building... he is still very Inch in Year 1983-4 teaching me RS"