From Middle English restreinen, a borrowing from Old French restreindre, from Latin rēstringere, present active infinitive of rēstringō.

• IPA: /ɹɪˈstɹeɪn/

restrain (restrains, present participle restraining; simple past and past participle restrained)

1. (transitive) To control or keep in check.
   • 1875, Russell Thacher Trall, The Mother's Hygienic Hand-book, page 42:

     As with vicarious mismenstruation, the abnormal cessation only requires strict attention to the general health, with such measures to restrain hemorrhage as have already been indicated.

2. (transitive) To deprive of liberty.
3. (transitive) To restrict or limit.

   He was restrained by the straitjacket.

• (control or keep in check) check, limit, restrain, withstrain; See also Thesaurus:curb
• (deprive of liberty) confine, detain

• constrain
• restraint
• restrict

• French: retenir
• German: (formally) zügeln
• Italian: trattenere, sorvegliare, trattenersi
• Portuguese: conter, coibir, deter
• Russian: сде́рживать
• Spanish: reprimir

• French: réprimer
• German: einschränken, behindern
• Italian: trattenere
• Portuguese: encarcerar, reprimir
• Russian: заключа́ть
• Spanish: retener

• French: restreindre
• German: abgrenzen, begrenzen, eingrenzen
• Italian: ridurre, contenere, restringere, limitare, delimitare
• Portuguese: restringir, conter
• Russian: сде́рживать
• Spanish: restringir

From .

restrain (restrains, present participle restraining; simple past and past participle restrained)

1. (transitive) To strain again.
   • 1998, Elena Molokhovets, Classic Russian Cooking, page 360:

     Squeeze the juice from 3 oranges and let the juice stand. Then pour it off, strain, and mix with the syrup. Restrain the liquid and chill in a mold.