gatepost

• POS: Noun
• HYPHEN: gate=post

CIDE DICTIONARY

gatepost, n. 

•  A post to which a gate is hung; -- called also swinging post or hinging post.  [1913 Webster]
•  A post against which a gate closes; -- called also shutting post.  [1913 Webster]

OXFORD DICTIONARY

gatepost, n. a post on which a gate is hung or against which it shuts.

Idiom

between you and me and the gatepost in strict confidence.

THESAURUS

gatepost

French door, Samson post, archway, back door, baluster, balustrade, banister, barway, bulkhead, carriage entrance, cellar door, cellarway, door, doorjamb, doorpost, doorway, front door, gate, gateway, hatch, hatchway, hitching post, jamb, king post, lintel, milepost, mullion, porch, portal, porte cochere, post, postern, propylaeum, pylon, scuttle, side door, signpost, snubbing post, stanchion, standard, stile, storm door, threshold, tollgate, trap, trap door, turnpike, turnstile, upright