backfriend /ˈbækˌfɹɛnd/ noun3 •(dialect, UK) Synonym of hangnail (“a loose, narrow strip of nail tissue protruding from the side edge and anchored near the base of a fingernail or toenail”).[…] Corrie bit another atom from off the corner of his nail. He had a troublesome "back-friend" or "agnail," at which he often bit. — 1866 •(dialect, no longer used) A friend who supports someone; a person who has someone's back; a backer, a supporter. •(dialect, no longer used) A person who pretends to be someone's friend; a false friend, a secret enemy.[…] VVestmorland thought it safest to checke the Scots, as the neerer and continuall backe-friends. — 1611 formsbackfriends
