Definitions of hard:

• adjective:   very strong or vigorous

  Example: "A hard left to the chin"

• adjective:   dried out

  Example: "Hard dry rolls left over from the day before"

• adjective:   unfortunate or hard to bear

  Example: "Had hard luck"

• adjective:   not yielding to pressure or easily penetrated

  Example: "Hard as rock"

• adjective:   metaphorically hard

  Example: "A hard fate"

• adjective:   of speech sounds
• adjective:   having a high alcoholic content

  Example: "Hard liquor"

• adjective:   having undergone fermentation

  Example: "Hard cider"

• adjective:   not easy; requiring great physical or mental effort to accomplish or comprehend or endure

  Example: "Why is it so hard for you to keep a secret?"

• adjective:   characterized by toilsome effort to the point of exhaustion; especially physical effort

  Example: "Hard labor"

• adverb:   with effort or force or vigor

  Example: "The team played hard"

• adverb:   to the full extent possible; all the way

  Example: "Hard alee"

• adverb:   slowly and with difficulty

  Example: "Prejudices die hard"

• adverb:   causing great damage or hardship

  Example: "Industries hit hard by the depression"

• adverb:   with firmness

  Example: "Held hard to the railing"

• adverb:   earnestly or intently

  Example: "Thought hard about it"

• adverb:   with pain or distress or bitterness

  Example: "He took the rejection very hard"

• adverb:   very near or close in space or time

  Example: "It stands hard by the railroad tracks"

• adverb:   into a solid condition

  Example: "Concrete that sets hard within a few hours"

• adverb:   indulging excessively
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #12415)