Astride means with one leg on each side of something. Sit astride the horse, astride a bench, stand astride it.
It works figuratively of anything spanning two things — a city astride a river, a company astride two markets. Riding astride rather than side-saddle was thought improper for women until the twentieth century. Note the a- prefix, as in aboard and ashore.
1adverbastrideWith one leg on each side of something.
“The boy sat astride the fence, swinging his legs and watching the cows.”
astride is a position.
Proto-Germanic
*strīdaną
Proto-West Germanic
*strīdan
Old English
strīdan — stride
Middle English
striden
English
stride
English, today
astride
From a- + stride. stride comes from Middle English striden, from Old English strīdan (“stride”), from Proto-West Germanic strīdan, from Proto-Germanic strīdaną. Cognate with Low German striden (“to fight, to stride”), Dutch strijden (“to fight”), German streiten (“to fight, to quarrel”).
Etymology from Wiktionary, CC BY-SA