a loom / woven cloth

(mathematics) natural logarithm

use one thing for many purposes / work someone hard

to use one's head

kanji approved for regular use by the 文部科学省 (Monbu-kagaku-shō, “Japanese Ministry of Education”)

one's usual practice, one's old trick; one's usual modus operandi, the same old tactic

a machine, a device; a contraption / a loom / an opportunity, a chance to do something; the right time or moment / something of great importance: the linchpin of the matter

indicates aircraft / indicates paper aeroplanes / indicates lives in video games

indicates machines / indicates airplanes

a trap or snare that works by beheading the bird or beast caught in it