a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"
a book (or manuscript) consisting of large sheets of paper folded in the middle to make two leaves or four pages; "the first folio of Shakespeare's plays"
a piece of information about circumstances that exist or events that have occurred; "first you must collect all the facts of the case"
a concept whose truth can be proved; "scientific hypotheses are not facts"
a statement or assertion of verified information about something that is the case or has happened; "he supported his argument with an impressive array of facts"
an event known to have happened or something known to have existed; "your fears have no basis in fact"; "how much of the story is fact and how much fiction is hard to tell"
a strong feeling of anxiety; "his worry over the prospect of being fired"; "it is not work but worry that kills"; "he wanted to die and end his troubles"
touch or rub constantly; "The old man worried his beads"
lacerate by biting; "the dog worried his bone"
disturb the peace of mind of; afflict with mental agitation or distress; "I cannot sleep--my daughter's health is worrying me"
be concerned with; "I worry about my grades"
be worried, concerned, anxious, troubled, or uneasy; "I worry about my job"