trait

noun

1. A distinguishing quality (as of personal character)

   "curiosity is one of her notable traits"

2. An inherited characteristic
3. A stroke of or as if of a pencil
4. Touch, trace

noun

1. An inherited usually asymptomatic blood condition in which some red blood cells tend to sickle but usually not enough to produce anemia and that occurs primarily in individuals of African, Mediterranean, or southwest Asian ancestry who are heterozygous for the gene controlling hemoglobin S