A plane figure formed by removing a parallelogram from a corner of a larger parallelogram.
An object such as a pillar or a rod that is used to tell time by the shadow it casts when the sun shines on it, especially the pointer on a sundial.
An object such as a pillar used by an observer to calculate the meridian altitude of the sun (that is, the altitude of the sun when it reaches the observer's meridian), for the purpose of determining the observer's latitude.
The index of the hour circle of a globe.
A number representing the increment between two figurate numbers (“numbers equal to the numbers of dots in geometric figures formed of dots”).
A projection on the edge of a gear that meshes with similar projections on adjacent gears, or on the circumference of a cog that engages with a chain.
An irreducible component of a comb that intersects the handle in exactly one point, that point being distinct from the unique point of intersection for any other tooth of the comb.
A hard, calcareous structure present in the mouth of many vertebrate animals, generally used for eating.
The rough surface of some kinds of cel or other films that allows better adhesion of artwork.
A pointed projection from the margin of a leaf.
A sharp projection on the blade of a saw or similar implement.
Liking, fondness (compare toothsome).
A projection or point in other parts of the body resembling the tooth of a vertebrate animal.
To provide or furnish with teeth.
To indent; to jag.
To lock into each other, like gear wheels.