差し入れる (さしいれる)to insert; to put in; to send in (to a prisoner; e.g. clothes, books)

to insert; to put inIchidan verb, transitive verb
to send in (to a prisoner; e.g. clothes, books)Ichidan verb, transitive verb
to deliver (food, refreshments, etc. to workers); to supplyIchidan verb, transitive verb

差し入れる, its kanji, and other words that share them.Open this graph

Kanji in 差し入れる

差さdifference; variation
差別さべつdistinction; differentiation
格差かくさqualitative difference; disparity
偏差値へんさちdeviation value (usu. scaled to mean of 50, standard deviation of 10, and often used for academic grades); deviation
差益さえきmarginal profits
大差たいさgreat difference; big difference
差し止めさしとめprohibition; ban
交差点こうさてんcrossing; intersection
輸入ゆにゅうimport; importation
収入しゅうにゅうincome; receipts
導入どうにゅうintroduction; bringing in
購入こうにゅうpurchase; buy
介入かいにゅうintervention
入りいりentering
入札にゅうさつbid; tender
受け入れうけいれreceiving; acceptance

See how 差し入れる connects to the rest of Japanese.