(1):

(n.) An attribute or quality peculiar to a species.

(2):

(n.) See Specialty, 3.

(3):

(n.) The special or peculiar mark or characteristic of a person or thing; that for which a person is specially distinguished; an object of special attention; a special occupation or object of attention; a specialty.

(4):

(n.) A particular or peculiar case; a particularity.