(1):

(n.) The interior or central part or place; the middle; - used chiefly in the objective case after in; as, in the midst of the forest.

(2):

(adv.) In the middle.

(3):

(n.) Hence, figuratively, the condition of being surrounded or beset; the press; the burden; as, in the midst of official duties; in the midst of secular affairs.

(4):

(prep.) In the midst of; amidst.