hunch, suspicion, intuition - an impression that something might be the case; "he had an intuition that something had gone wrong"

internal organ, viscus - a main organ that is situated inside the body

arteria coronaria, coronary artery - the artery that branches from the aorta to supply blood to the heart

athlete's heart - enlarged heart commonly found among athletes trained for endurance

biauriculate heart - a heart (as of mammals and birds and reptiles) having two auricles

cardiac muscle, heart muscle - the muscle tissue of the heart; adapted to continued rhythmic contraction

cardiac valve, heart valve - a valve to control one-way flow of blood

valve - a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it

cardiovascular system, circulatory system - the organs and tissues involved in circulating blood and lymph through the body

bravery, courage, courageousness - a quality of spirit that enables you to face danger of pain without showing fear

area, country - a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography); "it was a mountainous area"; "Bible country"

center stage, centre stage - the central area on a theater stage

central city, city center, city centre - the central part of a city

storm centre, storm center - the central area or place of lowest barometric pressure within a storm

financial center - the part of a city where financial institutions are centered

hub - a center of activity or interest or commerce or transportation; a focal point around which events revolve; "the playground is the hub of parental supervision"; "the airport is the economic hub of the area"

inner city - the older and more populated and (usually) poorer central section of a city

medical center - the part of a city where medical facilities are centered

midfield - (sports) the middle part of a playing field (as in football or lacrosse)

seat - a center of authority (as a city from which authority is exercised)

City of London, the City - the part of London situated within the ancient boundaries; the commercial and financial center of London

midstream - the middle of a stream

cognitive content, mental object, content - the sum or range of what has been perceived, discovered, or learned

bare bones - (plural) the most basic facts or elements; "he told us only the bare bones of the story"

hypostasis - (metaphysics) essential nature or underlying reality

haecceity, quiddity - the essence that makes something the kind of thing it is and makes it different from any other

quintessence - the purest and most concentrated essence of something

stuff - a critically important or characteristic component; "suspense is the very stuff of narrative"

disposition, temperament - your usual mood; "he has a happy disposition"

plane figure, two-dimensional figure - a two-dimensional shape

organs, variety meat - edible viscera of a butchered animal

feeling - the experiencing of affective and emotional states; "she had a feeling of euphoria"; "he had terrible feelings of guilt"; "I disliked him and the feeling was mutual"

attachment, fond regard - a feeling of affection for a person or an institution

protectiveness - a feeling of protective affection

regard, respect - a feeling of friendship and esteem; "she mistook his manly regard for love"; "he inspires respect"

soft spot - a sentimental affection; "she had a soft spot for her youngest son"

major suit - (bridge) a suit of superior scoring value, either spades or hearts

playing card - one of a pack of cards used in playing card games