desk, table
机 centers on a flat raised surface for working or placing things: a desk or table.
机 combines 木 (wood) with 几, which likely contributes the sound and the idea of a small table or stand. The character originally referred to a wooden table or desk.
The left side is wood 木, and the right side 几 looks like a small table frame. Picture a wooden desk made from a tree and a simple stand.
For キ, imagine a key lying on the wooden desk: key -> キ, and the desk holds the key.
desk
on the desk
small desk
kneehole desk
clerical desk; office desk
office desk; work desk
eight-legged table (used as a stand for religious offerings, etc.)
study desk
Japanese-style desk (short, used while sitting on the floor)
desk made in China; Chinese style desk
child desk
folding desk
Japanese-style writing desk
dustless desk by a well-lit window; well-lit and clean study conducive to learning
writing desk
to sit at a desk (to study); to be at one's desk; to set to work on revision, homework, etc.
legs of a table
to work together (in the same class, workplace, etc.); to be classmates; to sit side by side; to put (one's) desks side by side
armchair theory; impracticable plan; unworkable idea
desk checking