verb (used without object), spe·cial·ized, spe·cial·iz·ing.
verb (used with object), spe·cial·ized, spe·cial·iz·ing.
Examples from the Web for specialise
She was not a bit like the polite young lady above, who seemed to specialise in noisy tipplers.The Pretty Lady |Arnold E. Bennett
He is the very modern type in every modern country who does specialise in slang.What I Saw in America|G. K. Chesterton
People must know what they want, and go to the shops which specialise in the particular article.Meccania|Owen Gregory
I did not specialise individuals, possibly because Radley was one.Tell England|Ernest Raymond
He is not even quite sure what he wants to specialise on, or if he wants to specialise at all.The Squire's Daughter|Archibald Marshall