Meaning

• To take upon oneself; to start, to embark on (a specific task etc.).

• To commit oneself (to an obligation, activity etc.).

  "He undertook to exercise more in future."

• To overtake on the wrong side.

  "I hate people who try and undertake on the motorway."

• To pledge; to assert, assure; to dare say.

• To take by trickery; to trap, to seize upon.

• To assume, as a character; to take on.

• To engage with; to attack, take on in a fight.

• To have knowledge of; to hear.

• To have or take charge of.

Meaning

• The business of an undertaker, or the management of funerals

• A promise or pledge; a guarantee

• That which is undertaken; any business, work, or project which a person engages in, or attempts to perform; an enterprise

• The act of one who undertakes (in either sense)