Definition of "knoll" in English

noun

1. A small mound or rounded hill.

2. (oceanography) A rounded, underwater hill with a prominence of less than 1,000 metres, which does not breach the water's surface.

noun

1. A knell.

verb

1. (transitive) To ring (a bell) mournfully; to knell.

2. (ambitransitive) To sound (something) like a bell; to knell.

3. (transitive) To call (someone, to church) by sounding or making a knell (as a bell, a trumpet, etc).

verb

1. To arrange related objects in parallel or at 90 degree angles.