Astringe

As`tringe´    (ăs`trĭnj´)

v. t.	1.	To bind fast; to constrict; to contract; to cause parts to draw together; to compress. [imp. & p. p. Astringed (-trĭnjd"); p. pr. & vb. n. Astringing (-jĭng).] Which contraction . . . astringeth the moisture of the brain and thereby sendeth tears into the eyes. - Bacon.
	2.	To bind by moral or legal obligation.

Thesaurus

Verb	1.	astringe - constrict or bind or draw together; "Lemon juice astringes the tissue in the mouth" constrict, compress, contract, compact, press, squeeze - squeeze or press together; "she compressed her lips"; "the spasm contracted the muscle"
	2.	astringe - become constricted or compressed; "The cold substance astringes" constringe, constrict, narrow - become tight or as if tight; "Her throat constricted"