Kneeler

noun

1. A person who kneels.

   "All the kneelers sighed with relief when they were told it was over and they could finally stand up."

2. A thing that is designed to be kneeled on.

   "The parish deacon was always pushing to get new kneelers for the church, probably because he was old and his knees were sensitive."

3. An apparatus that permits the loading door of a bus to decrease in height in order to facilitate boarding of passengers that are seniors and physically disadvantaged
4. On a gable-end, the stone (often decorated) at the base of the slope of the gable on either side.