Meaning: Membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional. Classified under: Nouns denoting animals. Synonyms: umbilical vesicle; vesicula umbilicus; vitelline sac; yolk sac. Hypernyms (vesicula umbilicus is a kind of...): sac (a structure resembling a bag in an animal)
electric fan; blower. Hypernyms (blower is a kind of...): fan (a device for creating a current of air by movement of a surface or surfaces) Meronyms (parts of blower): electric motor (a motor that converts electricity to mechanical work) fan blade (blade of a rotating fan)
A leaf blower is a popular gardening tool that can either be gas powered or electric/battery powered. It uses air to move leaves, grass shavings, debris and other things off of your yard, sidewalk, garage, driveway and porch or deck. Sometimes they are handheld and other times they are strapped on like a backpack.