The very beginning. / (US, slang) A close, longtime friend, one who has been around since the beginning.

At the very beginning; when something is entirely new.

(soccer) A quick one-touch play between two players. / (boxing) A one-two punch; two punches delivered in rapid succession / Two things in short succession

The highest class of motor racing sanctioned by the FIA.

Having only a single eye, particularly when a greater number is normal. / Being able to see out of only one eye.

A very close friend or family member for whom a person has feelings of endearment, one of someone's close ones; sometimes: next of kin (for example on hospital admission form).

Having length, but no width, height or depth. / (figuratively) Lacking depth or believability; flat. / (figuratively) Lacking personal depth and substance; conceited, vain, shallow, superficial.

The cardinal number occurring after do and before do two in a duodecimal system. Written 11, decimal value 13.

(US, slang) The police.

(soccer, ice hockey) To shoot (the ball or puck) directly from a teammate's pass.