What is the meaning of the word "hard"?

Definitions:

causing great damage or hardship adverb
- industries hit hard by the depression
dispassionate adjective
- took a hard look
dried out adjective
- hard dry rolls left over from the day before
earnestly or intently adverb
- thought hard about it
given to excessive indulgence of bodily appetites especially for intoxicating liquors adjective
- a hard drinker
into a solid condition adverb
- concrete that sets hard within a few hours
slowly and with difficulty adverb
- prejudices die hard
unfortunate or hard to bear adjective
- had hard luck
very near or close in space or time adverb
- it stands hard by the railroad tracks
with effort or force or vigor adverb
- the team played hard
with firmness adverb
- held hard to the railing
with pain or distress or bitterness adverb
- We took the rejection very hard.