Crayfish, also known as crawfish, crawdads, freshwater lobsters, or mudbugs, are freshwater crustaceans resembling small lobsters, to which they are related; taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea.rayfish, also known as crawfish, crawdads, freshwater lobsters, or mudbugs, are freshwater crustaceans resembling small lobsters, to which they are related; taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea.
â¢ CHORE (noun) The noun CHORE has 1 sense: 1. a specific piece of work required to be done as a duty or for a specific fee. Familiarity information: CHORE used as a noun is very rare.
Definition: The modified internal rate of return, or MIRR, is a financial formula used to measure the return of a project and compare it with other potential projects. It uses the traditional internal rate of return of a project and adapted to assume the difference between the reinvestment rate and the investment return. What Does the Modified Internal Rate of Return Mean? MIRR is a revised version of the internal rate of return (IRR), which calculates a reinvestment rate and accounts even or uneven cash flows.