heart

How to sign: an area that is approximately central within some larger region
"it is in the center of town"; "they ran forward into the heart of the struggle"; "they were in the eye of the storm";

Similiar / Same: center, middle, centre

Categories: area, country

Within this category: center stage, city center, City of London, financial center, hub, inner city, medical center, midfield, midstream, seat, storm center

heart

How to sign: the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body
"he stood still, his heart thumping wildly";

Similiar / Same: ticker, pump

Categories: internal organ, viscus

Within this category: athlete's heart, biauriculate heart

heart

How to sign: the choicest or most essential or most vital part of some idea or experience
"the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story";

Similiar / Same: essence, heart and soul, inwardness, nitty-gritty, gist, pith, kernel, substance, meat, nub, core, sum, center, marrow

Categories: cognitive content, content, mental object

Within this category: bare bones, hypostasis, quiddity, quintessence, stuff

heart

How to sign: a positive feeling of liking
"he had trouble expressing the affection he felt"; "the child won everyone's heart";

Similiar / Same: affection, affectionateness, fondness, warmheartedness, tenderness

Categories: feeling

Within this category: attachment, protectiveness, regard, soft spot

heart

How to sign: the courage to carry on
"he kept fighting on pure spunk"; "you haven't got the heart for baseball";

Similiar / Same: mettle, nerve, spunk

Categories: bravery, courage, courageousness