(1):

(prep.) See Amid.

(2):

(superl.) Denoting the middle part; as, in mid ocean.

(3):

(superl.) Occupying a middle position; middle; as, the mid finger; the mid hour of night.

(4):

(superl.) Made with a somewhat elevated position of some certain part of the tongue, in relation to the palate; midway between the high and the low; - said of certain vowel sounds; as, a (ale), / (/ll), / (/ld). See Guide to Pronunciation, // 10, 11.

(5):

(n.) Middle.