The word "jigger" can have a few different meanings, so let's break them down in a simple way.
Larval Mite: In biology, a jigger refers to a type of small mite (a tiny creature) that can suck the blood of animals, including humans. This can cause irritation or discomfort.
Sailing Term: In sailing, a jigger is a small mast on a boat, specifically the mizzenmast of a yawl (a type of sailing vessel). This mast helps support the sails.
Measuring Tool: In the context of drinks, a jigger is a small glass or tool used to measure a specific amount of liquid, usually alcohol, like whiskey. It typically holds about 1.5 ounces or a "single swallow" of liquor.
In scientific discussions, you might encounter phrases like "jigger infestation" when referring to the presence of these mites in an area. In sailing, you might discuss "rigging the jigger" when adjusting the sails of the boat.
There aren’t many idioms or phrasal verbs specifically related to “jigger,” but you might hear the phrase “jiggered up,” which can mean something is broken or messed up.
So remember, "jigger" can refer to a tiny creature that irritates, a small mast on a boat, or a tool for measuring drinks.