先 - before, ahead, previous

sending ahead

teacher; instructor; master

point; tip; end; nozzle

futures; futures contract

going ahead; going first

moving first; person with the first move

edge of blade

cutting edge; leading edge; forefront; state of the art

first (of all); firstly; to begin with; before anything else

starting in advance; starting first; going first; going ahead

foresight; anticipation

advanced; developed