ichidan verb / transitive:

• to throw; to cast (e.g. vote, light, shadow)
• to devote oneself (e.g. to a cause) - in the form of 身を投じる ➜ 身を投じる
• to invest; to put in
• to administer (medicine); to give

ichidan verb / intransitive verb:

• to surrender
• to take advantage of; to make full use of
• to fit well with; to match with; to be in tune with
• to stay (at a lodging)