I. əˈ- adverb
Etymology: a- (I) + straddle (v.)
: astride
sit astraddle on the horse
: on or above and extending onto both sides
the battle was fought astraddle of the road
II. preposition
: with one leg on each side of : astride
seated astraddle a horse
with one foot in either hemisphere, astraddle longitude 0 — C.S.Forester