insuck noun 1verb 1forms 3 noun1 •The act or process of sucking in; absorption.The timing of the insuck of semen in relation to sperm capacitation (the process that renders sperm capable of fertilizing an egg) has been discussed critically by Levin (2002). — 2006 verb1 •To suck in; inhale; absorb; soak up.The first course was soup, and as the younger used his spoon, his lips reached forth to meet it, at the same time he insucked his breath, which made a particular noise. — 1905 formsinsucked · insucking · insucks