'Clinched' definitions:

Definition of 'clinched'

adjective

Closed or squeezed together tightly; "a clenched fist"; "his clenched (or clinched) teeth" [syn: clenched, clinched]

From: GCIDE

Clinch \Clinch\ (kl[i^]nch; 224), v. t. [imp. & p. p. Clinched; p. pr. & vb. n. Clinching.] [OE. clenchen, prop. causative of clink to cause to clink, to strike; cf. D. klinken to tinkle, rivet. See Clink.]
1. To hold firmly; to hold fast by grasping or embracing tightly. "Clinch the pointed spear." --Dryden. [1913 Webster]
2. To set closely together; to close tightly; as, to clinch the teeth or the first. --Swift. [1913 Webster]
3. To bend or turn over the point of (something that has been driven through an object), so that it will hold fast; as, to clinch a nail. [1913 Webster]
4. To make conclusive; to confirm; to establish; as, to clinch an argument. --South. [1913 Webster]