The state of being difficult, or hard to do.
Physical danger from the environment, especially with risk of drowning
An obstacle that hinders achievement of a goal.
An objection.
An awkward situation or quarrel.
That which cannot be easily understood or believed.
A person's capacity to deal with difficulty.
Something that one uses to achieve an objective, e.g. raw materials or personnel.
Something that can be used to help achieve an aim, especially a book, equipment, etc. that provides information for teachers and students.
Hardware or software accessible by a computer, network, or another object connected to a computer.
To source anew or differently; to find or provide a new source for.
To supply with resources.