Under
Definition 1 of 5
Pro Tip 1/3
Hidden Objects
Use 'under' to imply something is concealed or obscured by what's above it. She found her keys under a pile of clothes.
Pro Tip 2/3
Shelter or Shade
'Under' can indicate a position that provides protection or refuge from above. We sat under a canopy to avoid the sun.
Pro Tip 3/3
Lower Position
Describes one object being at a lower level than another, often implying hierarchy. The captain's quarters are under the main deck.