the part of a plough or other agricultural tool that cuts the soil; a plough-share.

of or belonging to a caste or class.

patronising, bestowing undue favours in business, politics, appointment, etc. to people belonging to one's caste.

of good birth; brought forth in a noble family.

a man born to a good family.

a handsome man.

the act or process of proving; a testing or trying of something.

anything serving or tending to establish the truth of something or to convince a person of its truth; a proof.