The word 'tomcat' is correct and usable in written English.
It can be used to refer to a male cat, specifically a large or aggressive one. Example sentence: The neighborhood was filled with stray cats, but the one that always caught my attention was the fierce tomcat with piercing green eyes.
The Grumman Corporation continued its association with the U.S. Navy, producing the A-6 Intruder attack aircraft in the 1960s and the F-14 Tomcat fighter in the '70s.
It's not quite being savaged by a dead sheep, as Labour's Denis Healey famously once claimed to have been, more gently micturated upon on by an angry tomcat.
Brown decided to call his huge new tomcat Pynchon.
Murr, a tomcat who has taught himself to read and write, decides to issue an autobiography.
A fat ginger tomcat that slept on the lid of the dumpster right below the window of the couple's bedroom gave the husband a condescending look every time he went downstairs to throw out the garbage.
At one point, he began to improv a reminiscence about her with Stiller, saying, "Boy, she is a tomcat.
Dad and his chums caught Crip's old black tomcat, killed it, skinned it, and cooked it in the kitchen of one of Dad's little restaurants.
Nevertheless, Lazarus heard some noises through the trees: the cries of a colicky infant, yowling as unceasing and otherworldly as a tomcat at night.
Then he stretched his arms and yawned like a lazy tomcat, looked down at the ground, and, slowly, conscientiously, carefully, gathered the notes that were steeping in Lao Lan's piss, holding each one up to the light, as if to make sure it wasn't counterfeit.
"The Tale of Ginger and Pickles" features Ginger, a yellow-tabby tomcat who, despite being a shopkeeper, prefers not to serve the mice who enter his store, "because he said it made his mouth water".
I know you all are familiar with the story of the old black tomcat and the one-legged newlywed lesbian couple from Massachusetts.
