To bend the body or a part of the body forward and downward sometimes simultaneously bending the knees. (Merriam – Webster)
To stand or walk with a forward inclination of the head, body, or shoulders. (Merriam – Webster)
To descend from a superior rank, dignity, or status. (Merriam – Webster)
To lower oneself morally. (Merriam – Webster)
To bend the top half of the body forward and down. (Cambridge Dictionary)
If someone stoops, their head and shoulders are always bent forwards and down. (Cambridge Dictionary)
Bend one’s head or body forwards and downwards. (Oxford Dictionaries)
Stoop in architecture photos.
Old man stoops to fill bottle from street water pump at village.