Something external that elicits or influences a physiological or psychological activity or response, or that affects any of the sensory apparatuses.
A sting on the body of a plant or insect.
An external phenomenon that has an influence on a system, by triggering or modifying an internal phenomenon; for example, a spur or incentive that drives a person to take action or change behaviour.
A stimulant, such as amphetamine, that increases energy and decreases appetite.
A denture or retainer for the teeth in the upper jaw.
The piece of leather, etc., that forms the top part of a shoe above the sole.
An upper berth or bunk.
That which is higher, contrasted with the lower.
The upper portion of something
Someone with higher social standing
A spiritual passageway through which consciousness can reach a higher dimension.
A senior student.
A tooth in the upper jaw.
The Y-shaped strap on flip-flops.
Of or pertaining to a secondary school.
At a higher level, rank or position.
younger, more recent
Situated on higher ground, further inland, or more northerly.