Onion - a bulbous, layered vegetable; the only natural source of tear gas.

know one's onions (uhn-yuh ns) informal. 1. to be very knowledgeable about something; This user only pretends to know his onions about a variety of different subjects. 2. authoritative in one's work; The user has had hours of first-hand experience in dealing with the many layered idiom, "to know one's onions."

Activity

edit

Wall of Jericho - Book of Joshua, Construction and inhabitation sections