１．開悟之士，菩薩的德名。２．以法開導眾生之士，為和尚的尊稱。

陳義孝編, 竺摩法師鑑定, 《佛學常見辭彙》

The hero who is enlightened, or who opens the way of enlightenment, an epithet of the bodhisattva; also applied to monks.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

bodhi-sattva.

佛教漢梵大辭典

P.3957-P.3962

【梵】bodhisattvaḥ
【梵】बोधिसत्त्वः【中】菩提薩埵
【中】開士
【藏】byang chub sems dpa'

Mahāvyutpatti - DDBC version

開士 (kāi shì) 　( “a man, who is on the way to enlightenment” )

{《漢語大詞典》12.38a(佛典)} ; {《大漢和辞典》11.716a(佛典)} ;

Dharmarakṣa: {64c9} 吾復瞻見 開士之黨 英雄儔疋 出入山谷 專精思惟 歴察衆相 分別講説 演諸佛乘(v)

{K.12.1} bodhisattva~

Kumārajīva: {L.3a20} 菩薩

Dharmarakṣa: {66b11} 首藏 開 士

{K.21.13} do.

{O} bodhisatva~ mahāsatva~

Kumārajīva: {L.4b4} do.

Dharmarakṣa: {73b7}

{K.60.5} do.

Kumārajīva: {L.10c3} 菩薩

Dharmarakṣa: {73b13}

{K.60.11-}

Kumārajīva: {not found at L.10c8}

Dharmarakṣa: {106c16} 八十億姟百千逮諸總持開士(p)

{K.270.9} bodhisattva~

Kumārajīva: {L.36b9} 菩薩

Dharmarakṣa: {112a24} 開士、大士之衆(p)

{K.309.8} do.

Kumārajīva: {L.41b4} do.

Dharmarakṣa: {122c23}

{K.377.12} do.

Kumārajīva: {not found at L.50c17}

Dharmarakṣa: {128b28}

{K.435.11} do.

Kumārajīva: {not found at L.56b17}

Dharmarakṣa: {132c22}

{K.472.3} do.

Kumārajīva: {not found at L.61a6} 

A Digital Edition of A Glossary of Dharmarakṣa translation of the Lotus Sutra by Seishi Karashima, 1998