What is "to keep on"

Keep \Keep\, v. i.

1. To remain in any position or state; to continue; to abide; to stay; as, to keep at a distance; to keep aloft; to keep near; to keep in the house; to keep before or behind; to keep in favor; to keep out of company, or out reach.

2. To last; to endure; to remain unimpaired.

   If the malt be not thoroughly dried, the ale it makes will not keep.
   --Mortimer.

3. To reside for a time; to lodge; to dwell. [Now disused except locally or colloquially.]

   Knock at his study, where, they say, he keeps.
   --Shak.

4. To take care; to be solicitous; to watch. [Obs.]

   Keep that the lusts choke not the word of God that is in us.
   --Tyndale.

5. To be in session; as, school keeps to-day. [Colloq.]

   To keep from, to abstain or refrain from.

   To keep in with, to keep on good terms with; as, to keep in with an opponent.

   To keep on, to go forward; to proceed; to continue to advance.

   To keep to, to adhere strictly to; not to neglect or deviate from; as, to keep to old customs; to keep to a rule; to keep to one's word or promise.

   To keep up, to remain unsubdued; also, not to be confined to one's bed.