Webster's Revised Unabridged Dictionary · 1913

Edgeways

Edgeways , adverb

With the edge towards anything; in the direction of the edge.
Glad to get in a word, as they say, edgeways. — Sir W. Scott

the form edgeways is now uncommon.

Collocations (1)
to get a word in edgewise , to succeed in expressing an opinion in a conversation, in spite of constant speech from another or others; as, he talked incessantly and I couldn't get a word in edgewise.

Also: Edgewise