mine

noun

1. a. An excavation in the earth from which ore or minerals can be extracted.
   b. The site of such an excavation, with its surface buildings, elevator shafts, and equipment.
2. A deposit of ore or minerals in the earth or on its surface.
3. An abundant supply or source of something valuable: This guidebook is a mine of information.
4. a. A tunnel dug under an enemy emplacement to destroy it by explosives, cause it to collapse, or gain access to it for an attack.
   b. An explosive device used to destroy enemy personnel, shipping, fortifications, or equipment, often placed in a concealed position and designed to be detonated by contact, proximity, or a time fuse.
5. A burrow or tunnel made by an insect, especially a corridor on a leaf made by a leaf miner.

verb mined mined, min·ing, mines verb, transitive

1. a. To extract (ore or minerals) from the earth.
   b. To dig a mine in (the earth) to obtain ore or minerals.
2. a. To tunnel under (the earth or a surface feature).
   b. To make (a tunnel) by digging.
3. To lay explosive mines in or under.
4. To attack, damage, or destroy by underhand means; subvert.
5. To delve into and make use of; exploit: mine the archives for detailed information.

verb, intransitive

1. a. To excavate the earth for the purpose of extracting ore or minerals.
   b. To work in a mine.
2. To dig a tunnel under the earth, especially under an enemy emplacement or fortification.
3. To lay explosive mines.

Origin:

Origin: Middle English

Origin: , from Old French

Origin: , from Vulgar Latin *mīna

Origin: , probably of Celtic origin

.

pron. (used with a sing. or pl. verb) adjective A possessive form of I I
Archaic

Origin:

Origin: Middle English

Origin: , from Old English mīn; see me-¹ in Indo-European roots

.

Our Living Language In Standard English, most possessive pronouns have different forms when used as nouns, or nominals, as in That book is yours, than when used as adjectives, as in That is your book. The two exceptions are his and its, which retain the same form in both usages. The nominal forms all end in -s except for mine. In some Southern U.S. and New England vernacular dialects, all nominal possessive pronouns end in -n, just like mine, as in That book is hern (but not “That's hern book”) and Those cookies are ourn. Although forms such as hisn and hern are highly socially stigmatized, from a strictly linguistic standpoint these forms reflect a natural phenomenon in the development of all languages and dialects: Irregular patterns tend to be regularized, thereby eliminating exceptions to language “rules.” Further, hisn, hern, ourn, yourn, and theirn have a long history in English. They arose in the Middle English period (c. 1100-1500) by analogy with mine and thine, forms that are older than my and thy and that can be traced to Old English (c. 449-1100). Originally, my and thy were used before nouns beginning with consonant sounds, as in my book, while mine and thine were used before nouns beginning with vowel sounds, as in mine eyes—as a and an still are. This distinction persisted into the 18th century. But as nominal pronouns, mine and thine remained unchanged. This invariant use of -n led to its use for all nominal possessive pronouns (except its, which usually is not used nominally, as in That book is its). In fact, these -n forms may be older than the current standard -s forms, which arose late in the Middle English period, by analogy to his. Most likely, hern, ourn, yourn, and theirn originated somewhere in the central area of southern England, since they can still be found throughout many parts of that region. In the United States, the forms appear to be increasingly confined to older speakers in relatively isolated areas, indicating that these features are at last fading from use. In some Southern-based vernacular dialects, particularly African American Vernacular English, the irregular standard English pattern for nominal possessive forms has been regularized by adding -s to mine, as in That book is mines. See Note at an¹.