(meteorology) organized low-pressure system of thunderclouds with closed surface circulation and maximum sustained winds of less than 34 knots (63 km) per hour.

(classical mechanics) A theoretical point with mass assigned to it.

(biology) A specialized part of the soma of a neuron that connects to the axon. It is the last site in the soma where membrane potentials propagated from synaptic inputs are summated before being t...

To chew tobacco. / (of a horse) To let food drop from the mouth whilst chewing.